Question: when did the us win its first gold medal in volleyball
[{'answer': '1984', 'provenance': [{'wikipedia_id': '6640613', 'title': 'List of Olympic medalists in volleyball', 'start_paragraph_id': 3, 'start_character': 711, 'end_paragraph_id': 3, 'end_character': 715, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '6640613', 'title': 'List of Olympic medalists in volleyball', 'start_paragraph_id': 1, 'start_character': 863, 'end_paragraph_id': 1, 'end_character': 2043, 'bleu_score': 0.841070731933069, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1119544994640672436}, 'section': 'Section::::Abstract.'}]}]