Question: when was the palace of fine arts built
[{'answer': '1915', 'provenance': [{'wikipedia_id': '507113', 'title': 'Palace of Fine Arts', 'start_paragraph_id': 1, 'start_character': 134, 'end_paragraph_id': 1, 'end_character': 138, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '507113', 'title': 'Palace of Fine Arts', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 433, 'bleu_score': 0.972407137066537, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17515207181454169037}, 'section': 'Section::::Abstract.'}]}]