Question: what is the average height of a basketball player in the nba
[{'answer': '6 ft 7 in'}, {'provenance': [{'wikipedia_id': '37540895', 'title': 'Height in sports', 'start_paragraph_id': 46, 'start_character': 0, 'end_paragraph_id': 46, 'end_character': 291, 'bleu_score': 0.5659311211582561, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5179408937044945379}, 'section': 'Section::::Basketball.\n'}]}]