Question: who ran as an independent presidential candidate in 1992
[{'answer': 'Henry Ross Perot', 'provenance': [{'wikipedia_id': '43505', 'title': 'Ross Perot', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '43505', 'title': 'Ross Perot', 'start_paragraph_id': 1, 'start_character': 40, 'end_paragraph_id': 1, 'end_character': 503, 'bleu_score': 0.687063302417624, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17645957702041154118}, 'section': 'Section::::Abstract.'}]}]