Question: who has played the master in doctor who
[{'answer': 'Roger Delgado', 'provenance': [{'wikipedia_id': '155600', 'title': 'The Master (Doctor Who)', 'start_paragraph_id': 3, 'start_character': 27, 'end_paragraph_id': 3, 'end_character': 40, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Peter Pratt', 'provenance': [{'wikipedia_id': '155600', 'title': 'The Master (Doctor Who)', 'start_paragraph_id': 3, 'start_character': 201, 'end_paragraph_id': 3, 'end_character': 212, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Geoffrey Beevers', 'provenance': [{'wikipedia_id': '155600', 'title': 'The Master (Doctor Who)', 'start_paragraph_id': 3, 'start_character': 214, 'end_paragraph_id': 3, 'end_character': 230, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Anthony Ainley', 'provenance': [{'wikipedia_id': '155600', 'title': 'The Master (Doctor Who)', 'start_paragraph_id': 3, 'start_character': 235, 'end_paragraph_id': 3, 'end_character': 249, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Eric Roberts', 'provenance': [{'wikipedia_id': '155600', 'title': 'The Master (Doctor Who)', 'start_paragraph_id': 3, 'start_character': 251, 'end_paragraph_id': 3, 'end_character': 263, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Derek Jacobi', 'provenance': [{'wikipedia_id': '155600', 'title': 'The Master (Doctor Who)', 'start_paragraph_id': 3, 'start_character': 383, 'end_paragraph_id': 3, 'end_character': 395, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'John Simm', 'provenance': [{'wikipedia_id': '155600', 'title': 'The Master (Doctor Who)', 'start_paragraph_id': 3, 'start_character': 401, 'end_paragraph_id': 3, 'end_character': 410, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'answer': 'Michelle Gomez', 'provenance': [{'wikipedia_id': '155600', 'title': 'The Master (Doctor Who)', 'start_paragraph_id': 3, 'start_character': 421, 'end_paragraph_id': 3, 'end_character': 435, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '155600', 'title': 'The Master (Doctor Who)', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 435, 'bleu_score': 0.865164195300368, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 10569818067237941892}, 'section': 'Section::::Abstract.'}]}]