Question: average distance from earth to sun in kilometers
[{'answer': 'about 150 million'}, {'provenance': [{'wikipedia_id': '1210', 'title': 'Astronomical unit', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 593, 'bleu_score': 0.7139419538199671, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11089048631787754905}, 'section': 'Section::::Abstract.'}]}]