Question: who is the singer of ae dil hai mushkil
[{'answer': 'Arijit Singh', 'provenance': [{'wikipedia_id': '48207620', 'title': 'Ae Dil Hai Mushkil', 'start_paragraph_id': 48, 'start_character': 81, 'end_paragraph_id': 48, 'end_character': 93, 'bleu_score': 1.0, 'section': 'Section::::Soundtrack.\n'}]}]