Question: who found the south pass in wyoming in 1823
[{'answer': 'William Henry Ashley', 'provenance': [{'wikipedia_id': '448863', 'title': 'South Pass (Wyoming)', 'start_paragraph_id': 7, 'start_character': 8, 'end_paragraph_id': 7, 'end_character': 28, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '448863', 'title': 'South Pass (Wyoming)', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 396, 'bleu_score': 0.7768437591231331, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16214825379774961925}, 'section': 'Section::::History.\n'}]}]