Question: who is the current universal champion in wwe
[{'answer': 'Brock Lesnar', 'provenance': [{'wikipedia_id': '12767523', 'title': 'List of current champions in WWE', 'start_paragraph_id': 6, 'start_character': 215, 'end_paragraph_id': 6, 'end_character': 227, 'bleu_score': 1.0, 'section': 'Section::::Current champions.\n'}]}]