Question: where did putting milk in tea come from
[{'answer': 'Britain', 'provenance': [{'wikipedia_id': '18400194', 'title': 'Tea in the United Kingdom', 'start_paragraph_id': 1, 'start_character': 419, 'end_paragraph_id': 1, 'end_character': 426, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '18400194', 'title': 'Tea in the United Kingdom', 'start_paragraph_id': 31, 'start_character': 0, 'end_paragraph_id': 31, 'end_character': 626, 'bleu_score': 0.5843124875689331, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 5117545118355875900}, 'section': 'Section::::History.:Eighteenth century: a marker of middle-class upward mobility and patriotism.:Colonial trade.\n'}]}]