Question: how many goals has juan mata scored for manchester united
[{'answer': '10', 'provenance': [{'wikipedia_id': '7999675', 'title': 'Juan Mata', 'start_paragraph_id': 3, 'start_character': 418, 'end_paragraph_id': 3, 'end_character': 420, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]