Question: who played the original master in dr 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.'}]}, {'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': 10612581754942674006}, 'section': 'Section::::Abstract.'}]}]