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.

[EX Q]: As a generalization, the climate of the West can be described as semiarid; however, parts of the West get extremely high amounts of rain and / or snow, and still other parts are true desert and get less than 5 inches (130 mm) of rain per year. Also, the climate of the West is quite unstable, as areas that are normally wet can be very dry for years and vice versa.
[EX A]: what is the climate in the western region

[EX Q]: A major environmental concern known as topsoil erosion occurs when the topsoil layer is blown or washed away. Without topsoil, little plant life is possible. The estimated annual costs of public and environmental health losses related to soil erosion exceed $45 billion. Conventional agriculture encourages the depletion of topsoil because the soil must be plowed and replanted each year. Sustainable techniques attempt to slow erosion through the use of cover crops in order to build organic matter in the soil. The United States alone loses almost 3 tons of topsoil per acre per year. This is of great ecological concern as one inch of topsoil can take between 500 and 1,000 years to form naturally. On current trends, the world has about 60 years of topsoil left.
[EX A]: when does top to bottom erosion take place

[EX Q]: In 2000, the band released the cover album Renegades. The same year, growing tensions over the direction of the band prompted de la Rocha to quit, leading to the band's breakup. De la Rocha started a low-key solo career, while the rest of the band formed the rock supergroup Audioslave with Chris Cornell, the former frontman of Soundgarden; Audioslave recorded three albums before disbanding in 2007. The same year, Rage Against the Machine announced a reunion and performed together for the first time in seven years at the Coachella Valley Music and Arts Festival in April 2007. Up until 2011, the band continued to perform at more live venues and festivals around the world. In 2016, Morello, Commerford and Wilk formed a new band, Prophets of Rage, with Chuck D and B-Real. In 2017, they were nominated for induction into the Rock & Roll Hall of Fame in their first year of eligibility.
[EX A]:
band formed by members of rage against the machine