input: Please answer the following: I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "The elimination of wolves from Yellowstone National Park had profound impacts on the trophic pyramid. Without predation, herbivores began to over-graze many woody browse species, affecting the area's plant populations. In addition, wolves often kept animals from grazing in riparian areas, which protected beavers from having their food sources encroached upon. The removal of wolves had a direct effect on beaver populations, as their habitat became territory for grazing. Furthermore, predation keeps hydrological features such as creeks and streams in normal working order. Increased browsing on willows and conifers along Blacktail Creek due to a lack of predation caused channel incision because they helped slow the water down and hold the soil in place."?
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output: What was the outcome after the wolf population dropped?

input: Please answer the following: I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "Present-day Christian religious bodies known for conducting their worship services without musical accompaniment include some Presbyterian churches devoted to the regulative principle of worship, Old Regular Baptists, Primitive Baptists, Plymouth Brethren, Churches of Christ, the Old German Baptist Brethren, Doukhobors the Byzantine Rite and the Amish, Old Order Mennonites and Conservative Mennonites. Certain high church services and other musical events in liturgical churches (such as the Roman Catholic Mass and the Lutheran Divine Service) may be a cappella, a practice remaining from apostolic times. Many Mennonites also conduct some or all of their services without instruments. Sacred Harp, a type of folk music, is an a cappella style of religious singing with shape notes, usually sung at singing conventions."?
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output: Do some Mennonites allow music in their services

input: Please answer the following: I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "In the 18th century, the Moroccan Sultan Moulay Ismail "the Bloodthirsty" (16721727) raised a corps of 150,000 black slaves, called his Black Guard, who coerced the country into submission."?
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output: Where did those who submitted come from?

input: Please answer the following: I want to test the ability of students to read a passage and answer questions about it. Could you please come up with a good question for the passage "On December 21, 1968, Frank Borman, James Lovell, and William Anders became the first humans to ride the Saturn V rocket into space on Apollo 8. They also became the first to leave low-Earth orbit and go to another celestial body, and entered lunar orbit on December 24. They made ten orbits in twenty hours, and transmitted one of the most watched TV broadcasts in history, with their Christmas Eve program from lunar orbit, that concluded with a reading from the biblical Book of Genesis. Two and a half hours after the broadcast, they fired their engine to perform the first trans-Earth injection to leave lunar orbit and return to the Earth. Apollo 8 safely landed in the Pacific ocean on December 27, in NASA's first dawn splashdown and recovery."?
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output:
Where did William Anders go on December 21?