Question: who does mark hamill play in the flash
[{'answer': 'the Trickster', 'provenance': [{'wikipedia_id': '18617682', 'title': 'Mark Hamill', 'start_paragraph_id': 20, 'start_character': 37, 'end_paragraph_id': 20, 'end_character': 50, 'bleu_score': 1.0, 'section': 'Section::::Career.:Other work.\n'}]}, {'provenance': [{'wikipedia_id': '18617682', 'title': 'Mark Hamill', 'start_paragraph_id': 20, 'start_character': 0, 'end_paragraph_id': 20, 'end_character': 571, 'bleu_score': 0.9450701851959151, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3320080322532147553}, 'section': 'Section::::Career.:Other work.\n'}]}]