Question: how many vertices sides does a rectangle have
[{'answer': 'four', 'provenance': [{'wikipedia_id': '70048', 'title': 'Rectangle', 'start_paragraph_id': 1, 'start_character': 65, 'end_paragraph_id': 1, 'end_character': 69, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '70048', 'title': 'Rectangle', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 463, 'bleu_score': 0.9330252843665561, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17101560807396417037}, 'section': 'Section::::Abstract.'}]}]