Question: in the radian system of angular measurement what is the measure of one revolution
[{'answer': '180 / π degrees'}, {'provenance': [{'wikipedia_id': '26003', 'title': 'Radian', 'start_paragraph_id': 7, 'start_character': 0, 'end_paragraph_id': 7, 'end_character': 246, 'bleu_score': 0.770788094398685, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 17545620150336584673}, 'section': 'Section::::Definition.\n'}]}]