Question: who is the actor that plays stefan salvatore
[{'answer': 'Paul Wesley', 'provenance': [{'wikipedia_id': '5950855', 'title': 'Paul Wesley', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 11, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '5950855', 'title': 'Paul Wesley', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 287, 'bleu_score': 0.618934819072374, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10430007672930984233}, 'section': 'Section::::Abstract.'}]}]