Question: a regular pentagon has what type of symmetry
[{'answer': 'reflectional symmetry', 'provenance': [{'wikipedia_id': '20741014', 'title': 'Pentagon', 'start_paragraph_id': 5, 'start_character': 39, 'end_paragraph_id': 5, 'end_character': 60, 'bleu_score': 1.0, 'section': 'Section::::Regular pentagons.\n'}]}, {'answer': 'rotational symmetry', 'provenance': [{'wikipedia_id': '20741014', 'title': 'Pentagon', 'start_paragraph_id': 5, 'start_character': 66, 'end_paragraph_id': 5, 'end_character': 85, 'bleu_score': 1.0, 'section': 'Section::::Regular pentagons.\n'}]}, {'provenance': [{'wikipedia_id': '20741014', 'title': 'Pentagon', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 378, 'bleu_score': 0.9699161750394991, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10722168981107228699}, 'section': 'Section::::Regular pentagons.\n'}]}]