Question: who is the actor that plays rick on walking dead
[{'answer': 'Andrew James Clutterbuck', 'provenance': [{'wikipedia_id': '1309057', 'title': 'Andrew Lincoln', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 24, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Andrew Lincoln', 'provenance': [{'wikipedia_id': '1309057', 'title': 'Andrew Lincoln', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 14, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]