Question: who plays billy in anne with an e
[{'answer': 'Christian Martyn', 'provenance': [{'wikipedia_id': '51400982', 'title': 'Anne with an E', 'start_paragraph_id': 26, 'start_character': 12, 'end_paragraph_id': 26, 'end_character': 28, 'bleu_score': 1.0, 'section': 'Section::::Cast.:Others.\n'}]}]