Question: how many times mumbai won ipl in 2018
[{'answer': '6', 'provenance': [{'wikipedia_id': '54098159', 'title': '2018 Indian Premier League', 'start_paragraph_id': 1, 'start_character': 453, 'end_paragraph_id': 1, 'end_character': 454, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]