Question: who won the last series of t20 medal in 2017
[{'answer': 'Pakistan', 'provenance': [{'wikipedia_id': '50694067', 'title': '2017 ICC Champions Trophy Final', 'start_paragraph_id': 1, 'start_character': 78, 'end_paragraph_id': 1, 'end_character': 86, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '50694067', 'title': '2017 ICC Champions Trophy Final', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 690, 'bleu_score': 0.7908277524710631, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11184638227998880237}, 'section': 'Section::::Abstract.'}]}]