Question: who was the last washington team to win a championship
[{'answer': 'the Washington Capitals', 'provenance': [{'wikipedia_id': '11909447', 'title': 'Sports in Washington, D.C.', 'start_paragraph_id': 2, 'start_character': 652, 'end_paragraph_id': 2, 'end_character': 675, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '11909447', 'title': 'Sports in Washington, D.C.', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 857, 'bleu_score': 0.824043557962393, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15247945161230296241}, 'section': 'Section::::Abstract.'}]}]