Question: who was the vikings starting quarterback in 1993
[{'answer': 'Jim McMahon', 'provenance': [{'wikipedia_id': '10360015', 'title': 'List of Minnesota Vikings starting quarterbacks', 'start_paragraph_id': 5, 'start_character': 650, 'end_paragraph_id': 5, 'end_character': 661, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '10360015', 'title': 'List of Minnesota Vikings starting quarterbacks', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 732, 'bleu_score': 0.9839344367380701, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9917731905577740979}, 'section': 'Section::::History.\n'}]}]