Question: what happened to the american embassy in saigon
[{'answer': 'closed permanently', 'provenance': [{'wikipedia_id': '25737872', 'title': 'Embassy of the United States, Saigon', 'start_paragraph_id': 1, 'start_character': 419, 'end_paragraph_id': 1, 'end_character': 437, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '25737872', 'title': 'Embassy of the United States, Saigon', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 437, 'bleu_score': 0.9731482306711111, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5904064794547496267}, 'section': 'Section::::Abstract.'}]}]