Question: what is the name of the director general of ghana prisons service
[{'answer': 'Patrick Darko Missah', 'provenance': [{'wikipedia_id': '31706567', 'title': 'Ghana Prisons Service', 'start_paragraph_id': 18, 'start_character': 47, 'end_paragraph_id': 18, 'end_character': 67, 'bleu_score': 1.0, 'section': 'Section::::Administration.\n'}]}, {'provenance': [{'wikipedia_id': '31706567', 'title': 'Ghana Prisons Service', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 67, 'bleu_score': 0.8242367502646051, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2699802749571652217}, 'section': 'Section::::Administration.\n'}]}]