Question: who averages the most assists in nba history
[{'answer': 'John Stockton', 'provenance': [{'wikipedia_id': '26454768', 'title': 'List of National Basketball Association annual assists leaders', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '26454768', 'title': 'List of National Basketball Association annual assists leaders', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 484, 'bleu_score': 0.7897360967178331, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 367908909765513474}, 'section': 'Section::::Abstract.'}]}]