Question: who is the actor who plays damon in vampire diaries
[{'answer': 'Ian Joseph Somerhalder', 'provenance': [{'wikipedia_id': '1084540', 'title': 'Ian Somerhalder', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 22, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1084540', 'title': 'Ian Somerhalder', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 187, 'bleu_score': 0.704934229228634, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2100890297789699456}, 'section': 'Section::::Abstract.'}]}]