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.

[Q]: The Ghost Dance (Caddo: Nanissáanah, also called the Ghost Dance of 1890) was a new religious movement incorporated into numerous American Indian belief systems. According to the teachings of the Northern Paiute spiritual leader Wovoka (renamed Jack Wilson), proper practice of the dance would reunite the living with spirits of the dead, bring the spirits of the dead to fight on their behalf, make the white colonists leave, and bring peace, prosperity, and unity to Native American peoples throughout the region.
[A]: why did the plains tribes began performing the ghost dance in 1889


[Q]: Crop rotation is the practice of growing a series of dissimilar or different types of crops in the same area in sequenced seasons. It is done so that the soil of farms is not used for only one set of nutrients. It helps in reducing soil erosion and increases soil fertility and crop yield.
[A]: why do farmers rotate crops in the field


[Q]: She took over the role of Mrs. Granger from Heather Bleasdale (who had played Mrs. Granger in Chamber of Secrets) in the Harry Potter and the Deathly Hallows films. She played the role of Catelyn Stark in the HBO series Game of Thrones, replacing Jennifer Ehle who played the character in the original pilot episode.
[A]:
who played hermione's mom in harry potter