Question: who was the first presenter of desert island discs
[{'answer': 'Roy Plomley', 'provenance': [{'wikipedia_id': '189254', 'title': 'Desert Island Discs', 'start_paragraph_id': 2, 'start_character': 334, 'end_paragraph_id': 2, 'end_character': 345, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '189254', 'title': 'Desert Island Discs', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 394, 'bleu_score': 0.908663726663896, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 1358565555706641210}, 'section': 'Section::::Abstract.'}]}]