Question: who are the two senators from the state of washington
[{'answer': 'Patty Murray', 'provenance': [{'wikipedia_id': '416474', 'title': 'List of United States Senators from Washington', 'start_paragraph_id': 1, 'start_character': 161, 'end_paragraph_id': 1, 'end_character': 173, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Maria Cantwell', 'provenance': [{'wikipedia_id': '416474', 'title': 'List of United States Senators from Washington', 'start_paragraph_id': 1, 'start_character': 178, 'end_paragraph_id': 1, 'end_character': 192, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '416474', 'title': 'List of United States Senators from Washington', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 192, 'bleu_score': 0.7513169266927651, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8733646755838964561}, 'section': 'Section::::Abstract.'}]}]