Question: how many players does the nba draft each year
[{'answer': 'Sixty', 'provenance': [{'wikipedia_id': '835946', 'title': 'NBA draft', 'start_paragraph_id': 1, 'start_character': 1106, 'end_paragraph_id': 1, 'end_character': 1111, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '835946', 'title': 'NBA draft', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 1229, 'bleu_score': 0.9601682555534221, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17176559285883948769}, 'section': 'Section::::Abstract.'}]}]