Question: who won the boxing match between mayweather and guerrero
[{'answer': 'Floyd Mayweather', 'provenance': [{'wikipedia_id': '38658893', 'title': 'Floyd Mayweather Jr. vs. Robert Guerrero', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 16, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]