Question: who has more nba championships the east or west
[{'answer': 'Eastern Conference', 'provenance': [{'wikipedia_id': '16795291', 'title': 'List of NBA champions', 'start_paragraph_id': 1, 'start_character': 226, 'end_paragraph_id': 1, 'end_character': 244, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '16795291', 'title': 'List of NBA champions', 'start_paragraph_id': 3, 'start_character': 226, 'end_paragraph_id': 3, 'end_character': 514, 'bleu_score': 0.567099706469961, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16415896134387579889}, 'section': 'Section::::Abstract.'}]}]