Question: when was the bowling alley put in the white house
[{'answer': '1969', 'provenance': [{'wikipedia_id': '20086734', 'title': 'White House basement', 'start_paragraph_id': 7, 'start_character': 46, 'end_paragraph_id': 7, 'end_character': 50, 'bleu_score': 1.0, 'section': 'Section::::History.\n'}]}, {'provenance': [{'wikipedia_id': '20086734', 'title': 'White House basement', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 213, 'bleu_score': 0.9493253852526031, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7932577033177776621}, 'section': 'Section::::History.\n'}]}]