Question: who plays ethan in my babysitter's a vampire
[{'answer': 'Matthew Knight', 'provenance': [{'wikipedia_id': '32456196', 'title': "List of My Babysitter's a Vampire characters", 'start_paragraph_id': 4, 'start_character': 27, 'end_paragraph_id': 4, 'end_character': 41, 'bleu_score': 1.0, 'section': 'Section::::Main characters.:Ethan.\n'}]}, {'provenance': [{'wikipedia_id': '32456196', 'title': "List of My Babysitter's a Vampire characters", 'start_paragraph_id': 4, 'start_character': 0, 'end_paragraph_id': 4, 'end_character': 1747, 'bleu_score': 0.9723013619077331, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9034236037274686440}, 'section': 'Section::::Main characters.:Ethan.\n'}]}]