Question: when did beethoven compose his six easy variations on a swiss tune in f major for piano
[{'answer': '1790 -- 1792'}, {'provenance': [{'wikipedia_id': '416195', 'title': 'List of compositions by Ludwig van Beethoven', 'start_paragraph_id': 291, 'start_character': 0, 'end_paragraph_id': 291, 'end_character': 68, 'bleu_score': 0.722160038719837, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2636551564746636237}, 'section': 'Section::::List of works by number.:Works with WoO numbers.:Instrumental works: WoO 1–86.\n'}]}]