Question: what is the supreme law of the united states called
[{'answer': 'The United States Constitution', 'provenance': [{'wikipedia_id': '31644', 'title': 'Constitution of the United States', 'start_paragraph_id': 176, 'start_character': 0, 'end_paragraph_id': 176, 'end_character': 30, 'bleu_score': 1.0, 'section': 'Section::::Worldwide influence.\n'}]}, {'provenance': [{'wikipedia_id': '31644', 'title': 'Constitution of the United States', 'start_paragraph_id': 1, 'start_character': 38, 'end_paragraph_id': 1, 'end_character': 921, 'bleu_score': 0.775343250249466, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17416146063803698689}, 'section': 'Section::::Abstract.'}]}]