Question: who plays killian on once upon a time
[{'answer': "Colin Arthur O'Donoghue", 'provenance': [{'wikipedia_id': '30697671', 'title': "Colin O'Donoghue", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '30697671', 'title': "Colin O'Donoghue", 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 275, 'bleu_score': 0.9042878500265971, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9046380122004454400}, 'section': 'Section::::Abstract.'}]}]