Question: who made three attempts on the northwest passage
[{'answer': 'Martin Frobisher', 'provenance': [{'wikipedia_id': '21215', 'title': 'Northwest Passage', 'start_paragraph_id': 37, 'start_character': 312, 'end_paragraph_id': 37, 'end_character': 328, 'bleu_score': 1.0, 'section': 'Section::::Historical expeditions.:Northern Atlantic.\n'}]}, {'provenance': [{'wikipedia_id': '21215', 'title': 'Northwest Passage', 'start_paragraph_id': 37, 'start_character': 0, 'end_paragraph_id': 37, 'end_character': 478, 'bleu_score': 0.977139080690077, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3315923221906086184}, 'section': 'Section::::Historical expeditions.:Northern Atlantic.\n'}]}]