Question: who plays the chief of police in stranger things
[{'answer': 'David Harbour', 'provenance': [{'wikipedia_id': '11452081', 'title': 'David Harbour', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 13, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]