Question: what is the biggest asteroid in the solar system
[{'answer': 'Ceres', 'provenance': [{'wikipedia_id': '326413', 'title': 'List of exceptional asteroids', 'start_paragraph_id': 1, 'start_character': 208, 'end_paragraph_id': 1, 'end_character': 213, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]