Question: when did mcdonald's start serving filet o fish
[{'answer': '1962', 'provenance': [{'wikipedia_id': '2393333', 'title': 'Filet-O-Fish', 'start_paragraph_id': 1, 'start_character': 152, 'end_paragraph_id': 1, 'end_character': 156, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '2393333', 'title': 'Filet-O-Fish', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 628, 'bleu_score': 0.9160884460663351, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15916679829683524227}, 'section': 'Section::::Abstract.'}]}]