Question: what is the original color of the white house
[{'answer': 'sandstone', 'provenance': [{'wikipedia_id': '33057', 'title': 'White House', 'start_paragraph_id': 2, 'start_character': 280, 'end_paragraph_id': 2, 'end_character': 289, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '33057', 'title': 'White House', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 1427, 'bleu_score': 0.9804407632684461, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4376525686763637009}, 'section': 'Section::::Early history.:Construction.\n'}]}]