Question: how many players are in the british open
[{'answer': '156', 'provenance': [{'wikipedia_id': '176725', 'title': 'The Open Championship', 'start_paragraph_id': 58, 'start_character': 288, 'end_paragraph_id': 58, 'end_character': 291, 'bleu_score': 1.0, 'section': 'Section::::Structure.:Qualifying.\n'}]}]