Question: what plane does the british prime minister use
[{'answer': 'BAE - 146'}, {'provenance': [{'wikipedia_id': '4657666', 'title': 'Air transports of heads of state and government', 'start_paragraph_id': 396, 'start_character': 0, 'end_paragraph_id': 396, 'end_character': 299, 'bleu_score': 0.7625124029486191, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 563130498723921340}, 'section': 'Section::::List of aircraft, by country.:United Kingdom.\n'}]}]