Question: what religion is national cathedral in washington dc
[{'answer': 'Episcopal Church', 'provenance': [{'wikipedia_id': '211336', 'title': 'Washington National Cathedral', 'start_paragraph_id': 1, 'start_character': 171, 'end_paragraph_id': 1, 'end_character': 187, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '211336', 'title': 'Washington National Cathedral', 'start_paragraph_id': 1, 'start_character': 14, 'end_paragraph_id': 1, 'end_character': 715, 'bleu_score': 0.9033547089395451, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 115713230481997673}, 'section': 'Section::::Abstract.'}]}]