Question: who is the highest ranked golfer in the world
[{'answer': 'Dustin Johnson'}, {'provenance': [{'wikipedia_id': '10753786', 'title': 'List of world number one male golfers', 'start_paragraph_id': 1, 'start_character': 49, 'end_paragraph_id': 1, 'end_character': 509, 'bleu_score': 0.690132303464835, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 12212955221676109922}, 'section': 'Section::::Abstract.'}]}]