Question: who was the president when apollo 11 landed
[{'answer': 'Richard Nixon', 'provenance': [{'wikipedia_id': '662', 'title': 'Apollo 11', 'start_paragraph_id': 60, 'start_character': 759, 'end_paragraph_id': 60, 'end_character': 772, 'bleu_score': 1.0, 'section': 'Section::::Mission.:Launch and flight to lunar orbit.\n'}]}, {'provenance': [{'wikipedia_id': '662', 'title': 'Apollo 11', 'start_paragraph_id': 60, 'start_character': 0, 'end_paragraph_id': 60, 'end_character': 886, 'bleu_score': 0.9748099096887751, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5522990206058074345}, 'section': 'Section::::Mission.:Launch and flight to lunar orbit.\n'}]}]