challenge sets: abstractivity and topic diversity

wiki_cat_sum.py

@@ -95,9 +95,9 @@ _URLs = {
         ]
     },
     "film": {
-        "train": "./film/train-film.jsonl",
-        "validation": "./film/valid-film.jsonl",
-        "test": "./film/test-film.jsonl",
+        "train": "./main_splits/train-film.jsonl",
+        "validation": "./main_splits/valid-film.jsonl",
+        "test": "./main_splits/test-film.jsonl",
         "cs_abs":[
             "./cs_abs/test-film_nv_0.jsonl",
             "./cs_abs/test-film_nv_1.jsonl",