Question: the process of forcing ocean crust into the mantle is called
[{'answer': 'Subduction', 'provenance': [{'wikipedia_id': '145813', 'title': 'Subduction', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 10, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '145813', 'title': 'Subduction', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 430, 'bleu_score': 0.9192507668025021, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10870421240185701755}, 'section': 'Section::::Abstract.'}]}]