Question: when was the united states recognized as a country
[{'answer': '1778', 'provenance': [{'wikipedia_id': '31985065', 'title': 'History of United States diplomatic relations by country', 'start_paragraph_id': 1, 'start_character': 225, 'end_paragraph_id': 1, 'end_character': 229, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '31985065', 'title': 'History of United States diplomatic relations by country', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 303, 'bleu_score': 0.9611463610973231, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1494496043987883850}, 'section': 'Section::::Abstract.'}]}]