Question: what country on chinas border is mostly desert
[{'answer': 'Mongolia', 'provenance': [{'wikipedia_id': '23306833', 'title': 'Gobi Desert', 'start_paragraph_id': 1, 'start_character': 133, 'end_paragraph_id': 1, 'end_character': 141, 'bleu_score': 1.0, 'section': 'Section::::Abstract.'}]}, {'provenance': [{'wikipedia_id': '23306833', 'title': 'Gobi Desert', 'start_paragraph_id': 1, 'start_character': 0, 'end_paragraph_id': 1, 'end_character': 541, 'bleu_score': 0.788256633394779, 'meta': {'yes_no_answer': 'NONE', 'annotation_id': 9190731874372117626}, 'section': 'Section::::Abstract.'}]}]