Question: how many players on all star team nba
[{'answer': '12', 'provenance': [{'wikipedia_id': '278018', 'title': 'NBA All-Star Game', 'start_paragraph_id': 1, 'start_character': 273, 'end_paragraph_id': 1, 'end_character': 275, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '278018', 'title': 'NBA All-Star Game', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 506, 'bleu_score': 0.978375183951072, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10105149784404439252}, 'section': 'Section::::Abstract.'}]}]