Task: Question Generation
Input (English): concept: Vietnam  answers:  ['Houaphan', 'Salavan Province', 'Savannakhet Province', 'Bolikhamxai', 'Phongsaly Province', 'China', 'Laos', 'Khammouan', 'Louangphabang Province', 'Attapu Province']
Output (English): which countries share land border with vietnam?