Question: who sets the price in a competitive market
[{'answer': 'No participant', 'provenance': [{'wikipedia_id': '23002', 'title': 'Perfect competition', 'start_paragraph_id': 13, 'start_character': 49, 'end_paragraph_id': 13, 'end_character': 63, 'bleu_score': 1.0, 'section': 'Section::::Idealizing conditions of perfect competition.\n'}]}, {'provenance': [{'wikipedia_id': '23002', 'title': 'Perfect competition', 'start_paragraph_id': 13, 'start_character': 0, 'end_paragraph_id': 13, 'end_character': 95, 'bleu_score': 0.861173529963367, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14712082550122426404}, 'section': 'Section::::Idealizing conditions of perfect competition.\n'}]}]