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.

Context: . Middle Assyrian lead votive figurines Link Information: used to decorate cult statues, Answer:  clay, metal, wood, glass, and today plastic or resin 
What material were the symbols used by the Assyrians made of?

Context: The NFL locked out its officials in June Link Information: The 2012 NFL referee lockout was a labor dispute between the National Football League (NFL) and the NFL Referees Association Answer: 2012
In what year did the NFL lock its official out in June?

Context: the Khan of Khiva and the Emir of Bukhara Link Information: none Answer: none

Which place has the highest recorded population, the place where the Khan came from or the place where the Emir came from?