Question: who plays the ukulele in twenty one pilots
[{'answer': 'Tyler Joseph', 'provenance': [{'wikipedia_id': '38337784', 'title': 'Twenty One Pilots', 'start_paragraph_id': 1, 'start_character': 164, 'end_paragraph_id': 1, 'end_character': 176, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]