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.

[EX Q]: Context: a group of gunboats from the Confederate States Navy Link Information: a group of gunboats from the Confederate States Navy, Answer: 1
[EX A]: How many gunboats did the Confederate States Navy have?

[EX Q]: Context: A Matter of Loaf and Death, broadcast on BBC One on Christmas Day 2008. Link Information: none Answer: none
[EX A]: Who was in charge of BBC One when A Matter of Loaf and Death was broadcast on the channel?

[EX Q]: Context: The right to marry a person of a different race was addressed in Loving v. Virginia, in which the Court said, in 1967, that its decision striking down anti-miscegenation laws could be justified either by substantive due process, or by the Equal Protection Clause. Link Information: Anti-miscegenation laws were first introduced in North America from the late seventeenth century onwards by several of the Thirteen Colonies, and subsequently by many US states and US territories and remained in force in many US states until 1967. Answer: 99
[EX A]:
How many years after the Equal Protection Clause was created was it used to strike down anti-miscegenation laws?