Question: a polygon with all sides the same length is said to be
[{'answer': 'equilateral', 'provenance': [{'wikipedia_id': '214547', 'title': 'Equilateral polygon', 'start_paragraph_id': 1, 'start_character': 98, 'end_paragraph_id': 1, 'end_character': 109, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '214547', 'title': 'Equilateral polygon', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 445, 'bleu_score': 0.976327165973018, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4864065984257618463}, 'section': 'Section::::Abstract.'}]}]