Question: who plays prince richard in the white princess
[{'answer': 'Ned Elliott', 'provenance': [{'wikipedia_id': '50807741', 'title': 'The White Princess (miniseries)', 'start_paragraph_id': 39, 'start_character': 12, 'end_paragraph_id': 39, 'end_character': 23, 'bleu_score': 1.0, 'section': 'Section::::Cast and characters.:Guest.\n'}]}]