Question: what is the name of the time zone for london
[{'answer': 'Europe / London', 'provenance': [{'wikipedia_id': '4370050', 'title': 'Time in the United Kingdom', 'start_paragraph_id': 18, 'start_character': 233, 'end_paragraph_id': 18, 'end_character': 247, 'bleu_score': 1.0, 'section': 'Section::::IANA time zone database.\n'}]}, {'provenance': [{'wikipedia_id': '4370050', 'title': 'Time in the United Kingdom', 'start_paragraph_id': 18, 'start_character': 0, 'end_paragraph_id': 18, 'end_character': 309, 'bleu_score': 0.5759640640647881, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 3192592395010556546}, 'section': 'Section::::IANA time zone database.\n'}]}]