TASK DEFINITION: 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.
PROBLEM: 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

SOLUTION: What units did the Colonel Warrington served under inn the Texas-Indian Wars command?

PROBLEM: Context: he is still venerated as a saint by the Assyrian Church of the East, the Chaldean Catholic Church, the Roman Catholic Church, and the Syro-Malabar Catholic Church Link Information: The Assyrian Church of the East considers itself as the continuation of the Church of the East, a church that originally developed among the Assyrians during the first century AD in Assyria, Up Answer: Assyria

SOLUTION: In what countries are the headquarters of the churches that venerate Mari as a saint?

PROBLEM: Context: She started broadcasting with the BBC in 1986, Link Information: Britain's first live public broadcast was made from the factory of Marconi's Wireless Telegraph Company in Chelmsford in June 1920. Answer: 100

SOLUTION:
How old is the station that Storkey started broadcasting with in 1986?