Question: who won the wwe universal championship at greatest royal rumble
[{'answer': 'Braun Strowman', 'provenance': [{'wikipedia_id': '56756597', 'title': 'WWE Greatest Royal Rumble', 'start_paragraph_id': 2, 'start_character': 51, 'end_paragraph_id': 2, 'end_character': 65, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '56756597', 'title': 'WWE Greatest Royal Rumble', 'start_paragraph_id': 2, 'start_character': 0, 'end_paragraph_id': 2, 'end_character': 417, 'bleu_score': 0.6654242286878, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 8710134649167357286}, 'section': 'Section::::Abstract.'}]}]