Question: when did america first enter the middle east
[{'answer': 'early 19th century', 'provenance': [{'wikipedia_id': '10853528', 'title': 'United States foreign policy in the Middle East', 'start_paragraph_id': 4, 'start_character': 132, 'end_paragraph_id': 4, 'end_character': 150, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '10853528', 'title': 'United States foreign policy in the Middle East', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 493, 'bleu_score': 0.9748377259086851, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3935373479870291268}, 'section': 'Section::::History.\n'}]}]