Question: an astronomical object that generates energy through nuclear fusion is a
[{'answer': 'star', 'provenance': [{'wikipedia_id': '19605', 'title': 'Main sequence', 'start_paragraph_id': 1, 'start_character': 72, 'end_paragraph_id': 1, 'end_character': 76, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '19605', 'title': 'Main sequence', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 890, 'bleu_score': 0.8369749593836621, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 4176899943020208465}, 'section': 'Section::::Abstract.'}]}]