Question: what type of plate boundary separates the pacific plate from the north american plate
[{'answer': 'a transform boundary', 'provenance': [{'wikipedia_id': '520449', 'title': 'Pacific Plate', 'start_paragraph_id': 5, 'start_character': 237, 'end_paragraph_id': 5, 'end_character': 257, 'bleu_score': 1.0, 'section': 'Section::::Boundaries.\n'}]}, {'provenance': [{'wikipedia_id': '520449', 'title': 'Pacific Plate', 'start_paragraph_id': 5, 'start_character': 0, 'end_paragraph_id': 5, 'end_character': 451, 'bleu_score': 0.9751504244977051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6953021348478166318}, 'section': 'Section::::Boundaries.\n'}]}]