Question: what is the internal angle of a pentagon
[{'answer': '108 °', 'provenance': [{'wikipedia_id': '20741014', 'title': 'Pentagon', 'start_paragraph_id': 89, 'start_character': 235, 'end_paragraph_id': 89, 'end_character': 242, 'bleu_score': 1.0, 'section': 'Section::::Pentagons in tiling.\n'}]}]