remove num_pair in flat

README.md

@@ -100,9 +100,9 @@ The data is organized by page. Each page contains a list of questions and answer
   
 #### Flattened
 The data is organized by pair (i.e. pages are flattened). You can access the flat version of any language by appending `_flat` to the configuration (e.g. `en_flat`). The data will be returned pair-by-pair instead of page-by-page. 
-- **id** 
+- **domain_id** 
+- **pair_id**
 - **language**
-- **num_pairs**: the number of FAQs on the page
 - **domain**: source web domain of the FAQs
 - **question**
 - **answer**

mfaq.py

@@ -61,7 +61,6 @@ class MFAQ(datasets.GeneratorBasedBuilder):
                     "domain_id": datasets.Value("int64"),
                     "pair_id": datasets.Value("int64"),
                     "language": datasets.Value("string"),
-                    "num_pairs": datasets.Value("int64"),
                     "domain": datasets.Value("string"),
                     "question": datasets.Value("string"),
                     "answer": datasets.Value("string")
@@ -122,7 +121,6 @@ class MFAQ(datasets.GeneratorBasedBuilder):
                                 "pair_id": i,
                                 "domain": data["domain"],
                                 "language": data["language"],
-                                "num_pairs": 1,
                                 "question": pair["question"],
                                 "answer": pair["answer"]
                             }