Question: who plays guitar on rihanna california king bed
[{'answer': 'Delicata', 'provenance': [{'wikipedia_id': '30079772', 'title': 'California King Bed', 'start_paragraph_id': 1, 'start_character': 249, 'end_paragraph_id': 1, 'end_character': 257, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '30079772', 'title': 'California King Bed', 'start_paragraph_id': 6, 'start_character': 0, 'end_paragraph_id': 6, 'end_character': 1195, 'bleu_score': 0.9788801082709421, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3061175944167425455}, 'section': 'Section::::Composition and lyrical interpretation.\n'}]}]