Question: who was driving the truck in the movie duel
[{'answer': 'unnamed truck driver', 'provenance': [{'wikipedia_id': '250571', 'title': 'Duel (1971 film)', 'start_paragraph_id': 37, 'start_character': 41, 'end_paragraph_id': 37, 'end_character': 61, 'bleu_score': 1.0, 'section': 'Section::::Production.:The truck as the villain.\n'}]}, {'provenance': [{'wikipedia_id': '250571', 'title': 'Duel (1971 film)', 'start_paragraph_id': 37, 'start_character': 0, 'end_paragraph_id': 37, 'end_character': 826, 'bleu_score': 0.8245754589204911, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 924053632793956744}, 'section': 'Section::::Production.:The truck as the villain.\n'}]}]