Record visual conversion provenance and exclusions

provenance.json

@@ -4,8 +4,8 @@
   "format_version": 1,
   "splits": {
     "train": {
-      "rows": 30000,
-      "questions": 30000
+      "rows": 100000,
+      "questions": 100000
     },
     "validation": {
       "rows": 100,
@@ -17,7 +17,7 @@
   "license": "other",
   "license_url": "https://github.com/richzhang/PerceptualSimilarity",
   "configuration": {
-    "max_rows": 30000,
+    "max_rows": 100000,
     "max_rows_eval": 100,
     "seed": 42,
     "multiple_choice": true