Question: average rate of seafloor spreading east of juan de fuca ridge
[{'answer': 'approximately 6 centimeters per year', 'provenance': [{'wikipedia_id': '6750482', 'title': 'Juan de Fuca Ridge', 'start_paragraph_id': 19, 'start_character': 74, 'end_paragraph_id': 19, 'end_character': 110, 'bleu_score': 1.0, 'section': 'Section::::Tectonic Activity.\n'}]}, {'provenance': [{'wikipedia_id': '6750482', 'title': 'Juan de Fuca Ridge', 'start_paragraph_id': 19, 'start_character': 0, 'end_paragraph_id': 19, 'end_character': 313, 'bleu_score': 0.959574895300321, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 14500581387354797464}, 'section': 'Section::::Tectonic Activity.\n'}]}]