Question: how many words can a grey parrot learn
[{'answer': 'over 100 words', 'provenance': [{'wikipedia_id': '42430399', 'title': 'Grey parrot', 'start_paragraph_id': 21, 'start_character': 357, 'end_paragraph_id': 21, 'end_character': 371, 'bleu_score': 1.0, 'section': 'Section::::Relationship to humans.\n'}]}, {'provenance': [{'wikipedia_id': '42430399', 'title': 'Grey parrot', 'start_paragraph_id': 21, 'start_character': 0, 'end_paragraph_id': 21, 'end_character': 436, 'bleu_score': 0.923732788176137, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17280017412830587421}, 'section': 'Section::::Relationship to humans.\n'}]}]