Question: who plays ezra's brother on pretty little liars
[{'answer': 'Gregg Sulkin', 'provenance': [{'wikipedia_id': '11572925', 'title': 'Gregg Sulkin', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 12, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '11572925', 'title': 'Gregg Sulkin', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 589, 'bleu_score': 0.5781514393418431, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8627026278223939837}, 'section': 'Section::::Abstract.'}]}]