Question: what is the pass mark for usmle step 1
[{'answer': '194', 'provenance': [{'wikipedia_id': '2555114', 'title': 'USMLE Step 1', 'start_paragraph_id': 11, 'start_character': 202, 'end_paragraph_id': 11, 'end_character': 205, 'bleu_score': 1.0, 'section': 'Section::::Scoring.\n'}]}, {'provenance': [{'wikipedia_id': '2555114', 'title': 'USMLE Step 1', 'start_paragraph_id': 11, 'start_character': 0, 'end_paragraph_id': 11, 'end_character': 549, 'bleu_score': 0.979054689945215, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15819116857412290751}, 'section': 'Section::::Scoring.\n'}]}]