Question: how many players on a nba basketball team
[{'answer': '15', 'provenance': [{'wikipedia_id': '16258506', 'title': 'NBA Collective Bargaining Agreement', 'start_paragraph_id': 5, 'start_character': 29, 'end_paragraph_id': 5, 'end_character': 31, 'bleu_score': 1.0, 'section': 'Section::::Roster size.\n'}]}, {'provenance': [{'wikipedia_id': '16258506', 'title': 'NBA Collective Bargaining Agreement', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 894, 'bleu_score': 0.9880591662583851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16111514602593473162}, 'section': 'Section::::Roster size.\n'}]}]