Question: who did matthew gray gubler play in batman assault on arkham
[{'answer': 'Riddler / Edward Nygma', 'provenance': [{'wikipedia_id': '42114713', 'title': 'Batman: Assault on Arkham', 'start_paragraph_id': 2, 'start_character': 836, 'end_paragraph_id': 2, 'end_character': 858, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '42114713', 'title': 'Batman: Assault on Arkham', 'start_paragraph_id': 2, 'start_character': 4, 'end_paragraph_id': 2, 'end_character': 1239, 'bleu_score': 0.881792615716228, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 6619487310324043596}, 'section': 'Section::::Abstract.'}]}]