Question: which country led the boycott of the olympic games in 1980
[{'answer': 'the United States', 'provenance': [{'wikipedia_id': '1958265', 'title': '1980 Summer Olympics boycott', 'start_paragraph_id': 1, 'start_character': 82, 'end_paragraph_id': 1, 'end_character': 99, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1958265', 'title': '1980 Summer Olympics boycott', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 283, 'bleu_score': 0.957870874785216, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7634329682897364327}, 'section': 'Section::::Abstract.'}]}]