Question: what is the movement of the moon around the earth called
[{'answer': 'its orbit', 'provenance': [{'wikipedia_id': '5672031', 'title': 'Orbit of the Moon', 'start_paragraph_id': 2, 'start_character': 237, 'end_paragraph_id': 2, 'end_character': 246, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]