Task: Text Categorization
Input (English): The highest point in this nation is Phou Bia, just south of the Plain of Jars on the Plateau de Xiangkhoang. Its eastern border is formed by the Annamese Cordillera, which run until meeting the Boloven Plateau in the south. These highlands are the source of many rivers, including the Ou, Kadong, Wa, Kong, and Banghiang, and flow past cities such as Muang Huang, Saravan, Phongsali, and Pakxe into the Mekong, which forms the western boundary with Myanmar and Thailand. FTP, name this landlocked southeast Asian nation with a capital of Vientiane.
Output (English): Social Science