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: Among his pupils was Guidobaldo del Monte and Bernardino Baldi. Link Information: Guidobaldo del Monte (11 January 1545 – 6 January 1607, var. Guidobaldi or Guido Baldi), Marquis del Monte, was an Italian Answer: Italian

SOLUTION: Where were Commandino's pupils from?

PROBLEM: Context: Missions for this unit primarily concerned close air support, air strikes and interdiction missions supporting United Nations Command ground troops in the country Link Information: none Answer: none

SOLUTION: What other countries did Loring fight with while he supported the United nations command ground troops?

PROBLEM: Context: Roycroft was born in 1946 as the second of three sons to Bill Roycroft, an Olympic equestrian gold medallist Link Information: After the war, they moved with their son Barry (born 1944) to a 200 ha soldier's block near Camperdown in western Victoria, where they set up a dairy farm. The couple had two further sons, Wayne (born 1946) and Clarke (born 1950).  Answer: Barry

SOLUTION:
What are the names of the equestrian gold medallist's other sons?