diff --git "a/db-task-lists/all.json" "b/db-task-lists/all.json"
new file mode 100644--- /dev/null
+++ "b/db-task-lists/all.json"
@@ -0,0 +1,67998 @@
+[
+ [
+  "join-act-mooc",
+  "activity-active-streak"
+ ],
+ [
+  "join-act-mooc",
+  "activity-any-positive-label"
+ ],
+ [
+  "join-act-mooc",
+  "activity-appears-interactions"
+ ],
+ [
+  "join-act-mooc",
+  "activity-avg-feature0"
+ ],
+ [
+  "join-act-mooc",
+  "activity-churn"
+ ],
+ [
+  "join-act-mooc",
+  "activity-feature2-volatility"
+ ],
+ [
+  "join-act-mooc",
+  "activity-interaction-count"
+ ],
+ [
+  "join-act-mooc",
+  "activity-mean-feature2"
+ ],
+ [
+  "join-act-mooc",
+  "activity-mean-label"
+ ],
+ [
+  "join-act-mooc",
+  "activity-new-student-adoption"
+ ],
+ [
+  "join-act-mooc",
+  "activity-positive-rate"
+ ],
+ [
+  "join-act-mooc",
+  "activity-rank-within-student"
+ ],
+ [
+  "join-act-mooc",
+  "activity-sum-feature1"
+ ],
+ [
+  "join-act-mooc",
+  "activity-time-until-next-interaction"
+ ],
+ [
+  "join-act-mooc",
+  "student-active-streak"
+ ],
+ [
+  "join-act-mooc",
+  "student-appears-interactions"
+ ],
+ [
+  "join-act-mooc",
+  "student-avg-feature0"
+ ],
+ [
+  "join-act-mooc",
+  "student-distinct-activities"
+ ],
+ [
+  "join-act-mooc",
+  "student-dropout"
+ ],
+ [
+  "join-act-mooc",
+  "student-engagement-concentration"
+ ],
+ [
+  "join-act-mooc",
+  "student-feature0-spike"
+ ],
+ [
+  "join-act-mooc",
+  "student-feature0-volatility"
+ ],
+ [
+  "join-act-mooc",
+  "student-feature1-change"
+ ],
+ [
+  "join-act-mooc",
+  "student-feature1-to-feature0-ratio"
+ ],
+ [
+  "join-act-mooc",
+  "student-has-interaction"
+ ],
+ [
+  "join-act-mooc",
+  "student-has-positive-label"
+ ],
+ [
+  "join-act-mooc",
+  "student-high-engagement"
+ ],
+ [
+  "join-act-mooc",
+  "student-interaction-count"
+ ],
+ [
+  "join-act-mooc",
+  "student-interaction-count-long"
+ ],
+ [
+  "join-act-mooc",
+  "student-interaction-trend"
+ ],
+ [
+  "join-act-mooc",
+  "student-max-feature0"
+ ],
+ [
+  "join-act-mooc",
+  "student-max-feature3"
+ ],
+ [
+  "join-act-mooc",
+  "student-mean-feature0-long"
+ ],
+ [
+  "join-act-mooc",
+  "student-mean-feature1"
+ ],
+ [
+  "join-act-mooc",
+  "student-mean-feature2"
+ ],
+ [
+  "join-act-mooc",
+  "student-min-feature1"
+ ],
+ [
+  "join-act-mooc",
+  "student-negative-feature2"
+ ],
+ [
+  "join-act-mooc",
+  "student-new-activity-adoption"
+ ],
+ [
+  "join-act-mooc",
+  "student-peer-outperform-feature2"
+ ],
+ [
+  "join-act-mooc",
+  "student-rank-improvement-by-activity"
+ ],
+ [
+  "join-act-mooc",
+  "student-rank-within-activity"
+ ],
+ [
+  "join-act-mooc",
+  "student-repeats-last-activity"
+ ],
+ [
+  "join-act-mooc",
+  "student-return-after-dropout"
+ ],
+ [
+  "join-act-mooc",
+  "student-sum-feature0"
+ ],
+ [
+  "join-act-mooc",
+  "student-sum-label"
+ ],
+ [
+  "join-act-mooc",
+  "student-time-until-next-interaction"
+ ],
+ [
+  "join-act-mooc",
+  "student-top-feature0"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-avg-rating"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-churn-4w"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-churn-6w"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-distinct-reviewers"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-high-rating"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-rating-change"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-rating-volatility"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-return-4w"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-return-5w"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-return-6w"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-review-count"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-review-streak"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-review-volume-trend-reversal"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-time-until-next-5w"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-time-until-next-review"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "product-top-reviewed"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-active"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-avg-rating"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-churn"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-churn-4w"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-churn-5w"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-churn-6w"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-distinct-products"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-distinct-products-reviewed"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-long-review"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-new-product-adoption"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-rating-trend"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-rating-trend-reversal"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-return"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-return-4w"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-return-5w"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-return-6w"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-review-length-volatility"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-review-streak"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-time-until-next-4w"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-time-until-next-5w"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-time-until-next-6w"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-time-until-next-review"
+ ],
+ [
+  "join-amazon-arts-crafts",
+  "reviewer-will-repeat-last-product"
+ ],
+ [
+  "join-amazon-automotive",
+  "new-product-any-activity-cold-start"
+ ],
+ [
+  "join-amazon-automotive",
+  "new-product-repeat-cold-start"
+ ],
+ [
+  "join-amazon-automotive",
+  "new-product-short-horizon-cold-start"
+ ],
+ [
+  "join-amazon-automotive",
+  "new-product-verified-cold-start"
+ ],
+ [
+  "join-amazon-automotive",
+  "new-reviewer-any-activity-cold-start"
+ ],
+ [
+  "join-amazon-automotive",
+  "new-reviewer-repeat-cold-start"
+ ],
+ [
+  "join-amazon-automotive",
+  "new-reviewer-repeat-long-cold-start"
+ ],
+ [
+  "join-amazon-automotive",
+  "new-reviewer-short-horizon-cold-start"
+ ],
+ [
+  "join-amazon-automotive",
+  "new-reviewer-verified-cold-start"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-avg-rating"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-burst-reviews-rare"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-high-rating"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-multi-one-star-rare"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-one-star-rare"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-premium-review-rare"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-rating-change"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-rating-delta"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-rating-trend"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-rating-trend-reversal"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-rating-volatility"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-review-count"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-review-len-concentration"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-review-streak"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-time-until-next-review"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-top-rated"
+ ],
+ [
+  "join-amazon-automotive",
+  "product-voted-review-rare"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-active"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-avg-rating"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-churn"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-distinct-products"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-distinct-products-next"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-long-review-rare"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-new-product-adoption"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-one-star-rare"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-return"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-review-length-volatility"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-review-streak"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-time-until-next-review"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-verbose"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-verified-multi-rare"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-verified-purchase-rare"
+ ],
+ [
+  "join-amazon-automotive",
+  "reviewer-voted-review-rare"
+ ],
+ [
+  "join-amazon-beauty",
+  "product-avg-rating"
+ ],
+ [
+  "join-amazon-beauty",
+  "product-churn-4x"
+ ],
+ [
+  "join-amazon-beauty",
+  "product-high-rating"
+ ],
+ [
+  "join-amazon-beauty",
+  "product-rating-change"
+ ],
+ [
+  "join-amazon-beauty",
+  "product-rating-trend"
+ ],
+ [
+  "join-amazon-beauty",
+  "product-rating-volatility"
+ ],
+ [
+  "join-amazon-beauty",
+  "product-streak-length"
+ ],
+ [
+  "join-amazon-beauty",
+  "product-time-until-next-review"
+ ],
+ [
+  "join-amazon-beauty",
+  "product-top-rated"
+ ],
+ [
+  "join-amazon-beauty",
+  "reviewer-active"
+ ],
+ [
+  "join-amazon-beauty",
+  "reviewer-return"
+ ],
+ [
+  "join-amazon-books",
+  "book-all-verified"
+ ],
+ [
+  "join-amazon-books",
+  "book-any-new-review"
+ ],
+ [
+  "join-amazon-books",
+  "book-avg-review-length"
+ ],
+ [
+  "join-amazon-books",
+  "book-churn"
+ ],
+ [
+  "join-amazon-books",
+  "book-long-review"
+ ],
+ [
+  "join-amazon-books",
+  "book-low-rating"
+ ],
+ [
+  "join-amazon-books",
+  "book-low-rating-event"
+ ],
+ [
+  "join-amazon-books",
+  "book-max-review-len"
+ ],
+ [
+  "join-amazon-books",
+  "book-max-review-length"
+ ],
+ [
+  "join-amazon-books",
+  "book-mean-rating"
+ ],
+ [
+  "join-amazon-books",
+  "book-min-rating"
+ ],
+ [
+  "join-amazon-books",
+  "book-popular-next-window"
+ ],
+ [
+  "join-amazon-books",
+  "book-rating-trend"
+ ],
+ [
+  "join-amazon-books",
+  "book-rating-volatility"
+ ],
+ [
+  "join-amazon-books",
+  "book-return"
+ ],
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+  "join-amazon-books",
+  "book-review-concentration"
+ ],
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+  "join-amazon-books",
+  "book-review-count"
+ ],
+ [
+  "join-amazon-books",
+  "book-review-length-change"
+ ],
+ [
+  "join-amazon-books",
+  "book-top-review-volume"
+ ],
+ [
+  "join-amazon-books",
+  "book-total-rating-sum"
+ ],
+ [
+  "join-amazon-books",
+  "book-unique-reviewers"
+ ],
+ [
+  "join-amazon-books",
+  "book-verified-count"
+ ],
+ [
+  "join-amazon-books",
+  "book-verified-share"
+ ],
+ [
+  "join-amazon-books",
+  "book-will-be-reviewed"
+ ],
+ [
+  "join-amazon-cds-vinyl",
+  "album-high-rating"
+ ],
+ [
+  "join-amazon-cds-vinyl",
+  "album-rating-change"
+ ],
+ [
+  "join-amazon-cds-vinyl",
+  "album-rating-trend"
+ ],
+ [
+  "join-amazon-cds-vinyl",
+  "album-rating-volatility"
+ ],
+ [
+  "join-amazon-cds-vinyl",
+  "album-review-count"
+ ],
+ [
+  "join-amazon-cds-vinyl",
+  "album-review-len-concentration"
+ ],
+ [
+  "join-amazon-cds-vinyl",
+  "album-top-rated"
+ ],
+ [
+  "join-amazon-cds-vinyl",
+  "album-verbose-reviews"
+ ],
+ [
+  "join-amazon-cds-vinyl",
+  "reviewer-active"
+ ],
+ [
+  "join-amazon-cds-vinyl",
+  "reviewer-avg-rating"
+ ],
+ [
+  "join-amazon-cds-vinyl",
+  "reviewer-churn"
+ ],
+ [
+  "join-amazon-cds-vinyl",
+  "reviewer-return"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "product-avg-rating"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "product-distinct-reviewers"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "product-high-rating"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "product-rating-change"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "product-rating-trend"
+ ],
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+  "join-amazon-cell-phones",
+  "product-rating-trend-reversal"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "product-rating-volatility"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "product-review-concentration"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "product-review-count"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "product-review-len-concentration"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "product-review-streak"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "product-time-until-next-review"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "product-top-rated"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "reviewer-active"
+ ],
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+  "join-amazon-cell-phones",
+  "reviewer-avg-rating"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "reviewer-churn"
+ ],
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+  "join-amazon-cell-phones",
+  "reviewer-long-review"
+ ],
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+  "join-amazon-cell-phones",
+  "reviewer-new-product-adoption"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "reviewer-return"
+ ],
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+  "join-amazon-cell-phones",
+  "reviewer-review-concentration"
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+  "join-amazon-cell-phones",
+  "reviewer-review-streak"
+ ],
+ [
+  "join-amazon-cell-phones",
+  "reviewer-time-until-next-review"
+ ],
+ [
+  "join-amazon-clothing",
+  "cold-reviewer-medium-repeat"
+ ],
+ [
+  "join-amazon-clothing",
+  "cold-reviewer-verified-followup"
+ ],
+ [
+  "join-amazon-clothing",
+  "new-reviewer-long-horizon-repeat"
+ ],
+ [
+  "join-amazon-clothing",
+  "new-reviewer-quick-repeat"
+ ],
+ [
+  "join-amazon-clothing",
+  "new-reviewer-repeat-activity"
+ ],
+ [
+  "join-amazon-clothing",
+  "premium-product-review"
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+ [
+  "join-amazon-clothing",
+  "product-avg-rating"
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+  "join-amazon-clothing",
+  "product-distinct-reviewers"
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+ [
+  "join-amazon-clothing",
+  "product-high-rated"
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+ [
+  "join-amazon-clothing",
+  "product-long-review-rare"
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+  "join-amazon-clothing",
+  "product-multi-negative-storm"
+ ],
+ [
+  "join-amazon-clothing",
+  "product-negative-review-arrival"
+ ],
+ [
+  "join-amazon-clothing",
+  "product-new-reviewer-adoption"
+ ],
+ [
+  "join-amazon-clothing",
+  "product-one-star-event"
+ ],
+ [
+  "join-amazon-clothing",
+  "product-rating-concentration"
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+ [
+  "join-amazon-clothing",
+  "product-rating-trend-reversal"
+ ],
+ [
+  "join-amazon-clothing",
+  "product-rating-volatility"
+ ],
+ [
+  "join-amazon-clothing",
+  "product-review-share"
+ ],
+ [
+  "join-amazon-clothing",
+  "product-streak-length"
+ ],
+ [
+  "join-amazon-clothing",
+  "product-time-until-next-review"
+ ],
+ [
+  "join-amazon-clothing",
+  "product-top-rated"
+ ],
+ [
+  "join-amazon-clothing",
+  "reviewer-active"
+ ],
+ [
+  "join-amazon-clothing",
+  "reviewer-churn"
+ ],
+ [
+  "join-amazon-clothing",
+  "reviewer-high-vote-post"
+ ],
+ [
+  "join-amazon-clothing",
+  "reviewer-multi-verified-burst"
+ ],
+ [
+  "join-amazon-clothing",
+  "reviewer-new-product-adoption"
+ ],
+ [
+  "join-amazon-clothing",
+  "reviewer-perfect-rating-event"
+ ],
+ [
+  "join-amazon-clothing",
+  "reviewer-return"
+ ],
+ [
+  "join-amazon-clothing",
+  "reviewer-review-count"
+ ],
+ [
+  "join-amazon-clothing",
+  "reviewer-streak-length"
+ ],
+ [
+  "join-amazon-clothing",
+  "reviewer-verified-purchase-rare"
+ ],
+ [
+  "join-amazon-clothing",
+  "reviewer-voted-review-rare"
+ ],
+ [
+  "join-amazon-clothing",
+  "reviewer-will-repeat-product"
+ ],
+ [
+  "join-amazon-digital-music",
+  "new-reviewer-early-persist"
+ ],
+ [
+  "join-amazon-digital-music",
+  "new-reviewer-extended-activity"
+ ],
+ [
+  "join-amazon-digital-music",
+  "new-reviewer-multi-track"
+ ],
+ [
+  "join-amazon-digital-music",
+  "new-reviewer-verified-activity"
+ ],
+ [
+  "join-amazon-digital-music",
+  "new-reviewer-will-return"
+ ],
+ [
+  "join-amazon-digital-music",
+  "reviewer-active"
+ ],
+ [
+  "join-amazon-digital-music",
+  "reviewer-avg-rating"
+ ],
+ [
+  "join-amazon-digital-music",
+  "reviewer-churn"
+ ],
+ [
+  "join-amazon-digital-music",
+  "reviewer-rare-highvote-review"
+ ],
+ [
+  "join-amazon-digital-music",
+  "reviewer-rare-long-review"
+ ],
+ [
+  "join-amazon-digital-music",
+  "reviewer-rare-onestar-review"
+ ],
+ [
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+  "join-spider-voter-2",
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\ No newline at end of file