(Q).
Information: - The Perfume River ( Song Hng or Hng Giang ; ) is a river that crosses the city of Hu , in the central Vietnamese province of Tha Thien -- Hu Province . In the autumn , flowers from orchards upriver from Hu fall into the water , giving the river a perfume - like aroma , hence the soubriquet . - Vietnam, officially the Socialist Republic of Vietnam (SRV), is the easternmost country on the Indochina Peninsula in Southeast Asia. With an estimated 90.5 million inhabitants , it is the world's 14th-most-populous country, and the eighth-most-populous Asian country. Vietnam is bordered by China to the north, Laos to the northwest, Cambodia to the southwest, Thailand across the Gulf of Thailand to the southwest, and the Philippines, Malaysia and Indonesia across the South China Sea to the east and southeast. Its capital city has been Hanoi since the reunification of North and South Vietnam in 1976. - Hu "Northern accent" Hu is a city in central Vietnam that was the seat of Nguyen Dynasty emperors and the national capital from 1802-1945. A major attraction is its vast, 19th-century Citadel, surrounded by a moat and thick stone walls. It encompasses the Imperial City, with palaces and shrines; the Forbidden Purple City, once the emperor's home; and a replica of the Royal Theater. After reading the paragraphs above, we are interested in knowing the entity with which 'perfume river' exhibits the relationship of 'mouth of the watercourse'. Find the answer from the choices below. Choices: - gulf of thailand - south china sea
(A).
south china sea

(Q).
Information: - Geography. Nagano is located in north-central Nagano Prefecture, near the confluence of the Chikuma River and the Sai River. - Opened in 1996, the arena has a capacity of 18,000. It hosted the speed skating events of the 1998 Winter Olympics. The M-Wave is equipped with movable stands and an automatically winding artificial lawn machine. The two movable stands, each of which have seating for 1,210 spectators, allow the arena to be converted into various configurations including concert hall or a football field. - Nagano has impressive highland areas, including most of the Kita-Alps, Ch-Alps, and Minami-Alps, which extend into the neighbouring prefectures. In addition to its natural scenic beauty and rich history, Nagano was host to the 1998 Winter Olympics, which gained the prefecture international recognition as a world-class winter sport destination, and a Shinkansen line to Tokyo. - The 2008 World Single Distance Speed Skating Championships were held between 6 March and 9 March 2008 in the M - Wave , Nagano , Nagano . - The 1998 Winter Olympics, officially the , was a winter multi-sport event celebrated from 7 to 22 February 1998 in Nagano, Japan. After reading the paragraphs above, we are interested in knowing the entity with which '2008 world single distance speed skating championships' exhibits the relationship of 'country'. Find the answer from the choices below. Choices: - japan - world
(A).
japan