Question: how many times did apollo 11 orbit the moon before landing
[{'answer': '30', 'provenance': [{'wikipedia_id': '662', 'title': 'Apollo 11', 'start_paragraph_id': 3, 'start_character': 479, 'end_paragraph_id': 3, 'end_character': 481, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]