Question: when was the last time swedish house mafia performed
[{'answer': 'March 25 , 2018', 'provenance': [{'wikipedia_id': '8962895', 'title': 'Swedish House Mafia', 'start_paragraph_id': 28, 'start_character': 3, 'end_paragraph_id': 28, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::History.:2018–2019: Reunion and Tour Build Up.\n'}]}, {'provenance': [{'wikipedia_id': '8962895', 'title': 'Swedish House Mafia', 'start_paragraph_id': 1, 'start_character': 577, 'end_paragraph_id': 1, 'end_character': 707, 'bleu_score': 0.80377750806414, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 15996549060598032790}, 'section': 'Section::::Abstract.'}]}]