Question: who is the actor who plays mark sloan on grey anatomy
[{'answer': 'Eric Dane', 'provenance': [{'wikipedia_id': '3201113', 'title': 'Eric Dane', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 9, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '3201113', 'title': 'Eric Dane', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 449, 'bleu_score': 0.7023017661426071, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3567068050112741014}, 'section': 'Section::::Abstract.'}]}]