Question: two examples where low voltage transformers are used
[{'answer': 'toys', 'provenance': [{'wikipedia_id': '10657439', 'title': 'Transformer types', 'start_paragraph_id': 30, 'start_character': 78, 'end_paragraph_id': 30, 'end_character': 82, 'bleu_score': 1.0, 'section': 'Section::::Power transformer.:Leakage or stray field transformer.:Uses.\n'}]}, {'answer': 'doorbell installations', 'provenance': [{'wikipedia_id': '10657439', 'title': 'Transformer types', 'start_paragraph_id': 30, 'start_character': 86, 'end_paragraph_id': 30, 'end_character': 108, 'bleu_score': 1.0, 'section': 'Section::::Power transformer.:Leakage or stray field transformer.:Uses.\n'}]}, {'provenance': [{'wikipedia_id': '10657439', 'title': 'Transformer types', 'start_paragraph_id': 30, 'start_character': 0, 'end_paragraph_id': 30, 'end_character': 108, 'bleu_score': 0.673904706256473, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2819786955648511281}, 'section': 'Section::::Power transformer.:Leakage or stray field transformer.:Uses.\n'}]}, {'provenance': [{'wikipedia_id': '10657439', 'title': 'Transformer types', 'start_paragraph_id': 0, 'start_character': 0, 'end_paragraph_id': 0, 'end_character': 0, 'bleu_score': 1.0, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2819786955648511281}, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '10657439', 'title': 'Transformer types', 'section': 'Section::::Power transformer.:Leakage or stray field transformer.:Uses.\n', 'start_paragraph_id': 30, 'end_paragraph_id': 30, 'meta': {'evidence_span': ['Other applications are short-circuit-proof extra-low voltage transformers for toys or doorbell installations.', 'doorbell installations']}}]}, {'provenance': [{'wikipedia_id': '10657439', 'title': 'Transformer types', 'section': 'Section::::Power transformer.:Leakage or stray field transformer.:Uses.\n', 'start_paragraph_id': 29, 'end_paragraph_id': 29, 'meta': {'evidence_span': ['shorted. Leakage transformers are used for arc welding and high voltage discharge lamps (neon lights and cold cathode fluorescent lamps, which are series connected up to 7.5\xa0kV AC). It acts then both as a voltage transformer and as a magnetic ballast. Other applications are short-circuit-proof extra-low voltage transformers for toys or doorbell installations. A resonant transformer is a transformer in which one or both windings has a capacitor across it and functions as a tuned circuit. Used at radio frequencies, resonant transformers can function', 'doorbell installations', 'shorted. Leakage transformers are used for arc welding and high voltage discharge lamps (neon lights and cold cathode fluorescent lamps, which are series connected up to 7.5\xa0kV AC). It acts then both as a voltage transformer and as a magnetic ballast. Other applications are short-circuit-proof extra-low voltage transformers for toys or doorbell installations. A resonant transformer is a transformer in which one or both windings has a capacitor across it and functions as a tuned circuit. Used at radio frequencies, resonant transformers can function']}}]}]