Question: which european country has the largest colonial empire
[{'answer': 'The British Empire', 'provenance': [{'wikipedia_id': '4253823', 'title': 'Colonial empire', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 18, 'bleu_score': 1.0, 'section': 'Section::::European colonial empires.\n'}]}, {'provenance': [{'wikipedia_id': '4253823', 'title': 'Colonial empire', 'start_paragraph_id': 9, 'start_character': 0, 'end_paragraph_id': 9, 'end_character': 414, 'bleu_score': 0.970362113628587, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 2105311765573983253}, 'section': 'Section::::European colonial empires.\n'}]}]