Question: who has scored the most goals for manchester united
[{'answer': 'Wayne Rooney', 'provenance': [{'wikipedia_id': '12783587', 'title': 'List of Manchester United F.C. records and statistics', 'start_paragraph_id': 3, 'start_character': 275, 'end_paragraph_id': 3, 'end_character': 287, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '12783587', 'title': 'List of Manchester United F.C. records and statistics', 'start_paragraph_id': 3, 'start_character': 0, 'end_paragraph_id': 3, 'end_character': 350, 'bleu_score': 0.9679895851501501, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2299147070624023167}, 'section': 'Section::::Abstract.'}]}]