In this task, you're given a context, further information available on a particular linked term from the statement, and an answer term. Your job is to generate a question that can use the information provided to obtain the given answer. You should use the information on both context and link information to create the question. Note that the answer to the question should be exactly the given answer, and if the answer is none, the answer to the question shouldn't be obtainable from the context or linked information.

Q: Context: Warrington spent most of his career on the Texas frontier and served under Colonel Ranald S. Mackenzie during the Texas-Indian Wars of the 1870s. Link Information: On February 25, 1871, he assumed command of the 4th U.S. Cavalry at Fort Richardson in Jacksboro, Texas. Answer: the 4th U.S. Cavalry

A: What units did the Colonel Warrington served under inn the Texas-Indian Wars command?
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Q: Context: Lil Jon collaborated with DJ Snake and released the EDM multi-platinum hit, "Turn Down For What," Link Information: The music video for the single, Answer: Google

A: What company owns the website on which "Turn Down For What" has been viewed over 900 million times?
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Q: Context: Of the 62 flying fox species evaluated by the IUCN as of 2018, 3 are considered critically endangered: the Aru flying fox, Link Information: As the Pteropus genus is quite speciose, it is further divided into species groups. The Aru flying fox is placed in the livingstonii species group. Other members of this species group include:
- Livingstone's fruit bat, P. livingstonii
- Black-bearded flying fox, P. melanopogon
- Kei flying fox, P. keyensis Answer: 3

A:
How many species of the Aru Flying fox are there?
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