Question: who is the current director of the us mint
[{'answer': 'David Motl', 'provenance': [{'wikipedia_id': '31187327', 'title': 'Director of the United States Mint', 'start_paragraph_id': 3, 'start_character': 355, 'end_paragraph_id': 3, 'end_character': 365, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'David J. Ryder', 'provenance': [{'wikipedia_id': '31187327', 'title': 'Director of the United States Mint', 'start_paragraph_id': 1, 'start_character': 98, 'end_paragraph_id': 1, 'end_character': 112, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '31187327', 'title': 'Director of the United States Mint', 'section': 'Section::::Abstract.', 'start_paragraph_id': 1, 'end_paragraph_id': 1, 'meta': {'evidence_span': ['The Director of the United States Mint is a presidential appointment needing Senate confirmation. David J. Ryder', 'The Director of the United States Mint is a presidential appointment needing Senate confirmation. David J. Ryder became director in April 2018.', 'David J. Ryder became director in April 2018.']}}]}]