Question: 1 light year equal to how many km
[{'answer': '9.5 trillion kilometres'}, {'provenance': [{'wikipedia_id': '23473595', 'title': 'Light-year', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 424, 'bleu_score': 0.6895473458468321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8653288762871311679}, 'section': 'Section::::Abstract.'}]}]