Question: when did pakistan win the olympic gold medal in hockey for the first time
[{'answer': '1960', 'provenance': [{'wikipedia_id': '14768644', 'title': 'Pakistan at the Olympics', 'start_paragraph_id': 4, 'start_character': 70, 'end_paragraph_id': 4, 'end_character': 74, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '14768644', 'title': 'Pakistan at the Olympics', 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 228, 'bleu_score': 0.9493253852526031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17112105775768312544}, 'section': 'Section::::Abstract.'}]}]