Question: who ran as a third-party candidate in the 1968 presidential election
[{'answer': 'George Wallace', 'provenance': [{'wikipedia_id': '40567', 'title': '1968 United States presidential election', 'start_paragraph_id': 2, 'start_character': 785, 'end_paragraph_id': 2, 'end_character': 799, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]