Question: who sang humma humma in the movie ok jaanu
[{'answer': 'A.R. Rahman'}, {'answer': 'Jubin Nautiyal'}, {'answer': 'Shashaa Tirupati'}, {'answer': 'Badshah', 'provenance': [{'wikipedia_id': '49631653', 'title': 'Ok Jaanu', 'start_paragraph_id': 21, 'start_character': 589, 'end_paragraph_id': 21, 'end_character': 596, 'bleu_score': 1.0, 'section': 'Section::::Soundtrack.\n'}]}, {'answer': 'Tanishk Bagchi', 'provenance': [{'wikipedia_id': '49631653', 'title': 'Ok Jaanu', 'start_paragraph_id': 21, 'start_character': 601, 'end_paragraph_id': 21, 'end_character': 615, 'bleu_score': 1.0, 'section': 'Section::::Soundtrack.\n'}]}]