Question: in the united states the only legally sanctioned form of marriage is
[{'answer': 'monogamous', 'provenance': [{'wikipedia_id': '5673804', 'title': 'Types of marriages', 'start_paragraph_id': 3, 'start_character': 106, 'end_paragraph_id': 3, 'end_character': 116, 'bleu_score': 1.0, 'section': 'Section::::Americas and Europe.\n'}]}, {'provenance': [{'wikipedia_id': '5673804', 'title': 'Types of marriages', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 497, 'bleu_score': 0.9738505480425671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 16068285659523598880}, 'section': 'Section::::Americas and Europe.\n'}]}]