Question: norwegian wood features which unusual (for popular music) instrument
[{'answer': 'sitar', 'provenance': [{'wikipedia_id': '262837', 'title': 'Norwegian Wood (This Bird Has Flown)', 'start_paragraph_id': 1, 'start_character': 375, 'end_paragraph_id': 1, 'end_character': 380, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}]