TASK DEFINITION: In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.
PROBLEM: Shanghai (Chinese: 上海; Wu Chinese: Wu pronunciation; Mandarin: (ʂâŋ. xài) (listen)) is one of the four municipalities under the direct administration of the central government of China, the largest city in China by population, and the second most populous city proper in the world, with a population of more than 24 million as of 2017. It is a global financial centre and transport hub, with the world's busiest container port. Located in the Yangtze River Delta, it sits on the south edge of the estuary of the Yangtze in the middle portion of the East China coast. The municipality borders the provinces of Jiangsu and Zhejiang to the north, south and west, and is bounded to the east by the East China Sea.

SOLUTION: where is shanghai located on the world map

PROBLEM: A coach (also motor coach) is a type of bus used for conveying passengers. In contrast to transit buses that typically used within a single metropolitan region, coaches are used for longer-distance bus service. Often used for intercity -- or even international -- bus service, other coaches are also used for private charter for various purposes.

SOLUTION: whats the difference between a coach and a bus

PROBLEM: Additive color is in contrast to subtractive color, in which colors are created by subtracting (absorbing) parts of the spectrum of light present in ordinary white light, by means of colored pigments or dyes, such as those in paints, inks, and the three dye layers in typical color photographs on film.

SOLUTION:
what do you call any two colors of light that combine to form white light