Question: what type of fault is the cascadia subduction zone
[{'answer': 'dipping fault', 'provenance': [{'wikipedia_id': '1102205', 'title': 'Cascadia subduction zone', 'start_paragraph_id': 19, 'start_character': 45, 'end_paragraph_id': 19, 'end_character': 58, 'bleu_score': 1.0, 'section': 'Section::::Geophysics.\n'}]}, {'provenance': [{'wikipedia_id': '1102205', 'title': 'Cascadia subduction zone', 'start_paragraph_id': 19, 'start_character': 0, 'end_paragraph_id': 19, 'end_character': 274, 'bleu_score': 0.8505405945991491, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11266623845759343482}, 'section': 'Section::::Geophysics.\n'}]}]