Record visual conversion provenance and exclusions

provenance.json

@@ -0,0 +1,27 @@
+{
+  "source": "https://github.com/pswietojanski/slurp",
+  "revision": "8eb16545762be97ace75334109d73824217311f1",
+  "source_hashes": {
+    "train": "4a05a3de6c7f028aff298c4a90196e6a3fecd1938d96fb1c125d6fd10d5e301e",
+    "devel": "00d346b183ecc2d160853cd3dc20e8ccd207d9e1809cf6e2c05182076bd0ecc9",
+    "test": "fe3449af69b42fda7163345482556066c35a80f7e552a6d67e212a0e2f0783cc"
+  },
+  "excluded": {
+    "test/short_transcript": 155,
+    "test/duplicate_transcript": 1,
+    "validation/short_transcript": 104,
+    "validation/ambiguous_intent": 1,
+    "validation/duplicate_transcript": 1,
+    "train/short_transcript": 584,
+    "train/duplicate_transcript": 17,
+    "train/ambiguous_intent": 3
+  },
+  "split_policy": "native splits; exact transcript conflicts and overlap removed",
+  "conversion_sha256": "4857f543c86f9b0ba40b49b7a59a0911088428091ae061c73a799669e8ed7b82",
+  "license": "cc-by-4.0",
+  "splits": {
+    "test": 2818,
+    "validation": 1927,
+    "train": 10910
+  }
+}