Question: who plays mr selfridge in the hit series
[{'answer': 'Jeremy Piven', 'provenance': [{'wikipedia_id': '37879295', 'title': 'Mr Selfridge', 'start_paragraph_id': 9, 'start_character': 93, 'end_paragraph_id': 9, 'end_character': 105, 'bleu_score': 1.0, 'section': 'Section::::Casting.\n'}]}, {'provenance': [{'wikipedia_id': '37879295', 'title': 'Mr Selfridge', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 734, 'bleu_score': 0.9619523118578951, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 11594949925693099415}, 'section': 'Section::::Casting.\n'}]}]