Question: what language do they speak in beijing china
[{'answer': 'the prestige dialect of Mandarin', 'provenance': [{'wikipedia_id': '1074448', 'title': 'Beijing dialect', 'start_paragraph_id': 1, 'start_character': 52, 'end_paragraph_id': 1, 'end_character': 84, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '1074448', 'title': 'Beijing dialect', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 354, 'bleu_score': 0.7871444816554931, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 7238918572679075200}, 'section': 'Section::::Abstract.'}]}]