Question: how many popes were there during the great schism
[{'answer': 'Three', 'provenance': [{'wikipedia_id': '543939', 'title': 'Western Schism', 'start_paragraph_id': 1, 'start_character': 177, 'end_paragraph_id': 1, 'end_character': 182, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]