Question: when did the state of the union response start
[{'answer': '1966', 'provenance': [{'wikipedia_id': '26062172', 'title': 'Response to the State of the Union address', 'start_paragraph_id': 2, 'start_character': 22, 'end_paragraph_id': 2, 'end_character': 26, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '26062172', 'title': 'Response to the State of the Union address', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 538, 'bleu_score': 0.9382880328341491, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17086311875817932966}, 'section': 'Section::::Abstract.'}]}]