instruction:
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.
question:
Context: He was the son of Henry Andrade Harben and the grandson of Sir Henry Harben Link Information: Henry Andrade Harben FSA (12 August 1849 - 18 August 1910) Answer: 26
answer:
What is the age difference between Harben's father and grandfather?


question:
Context: Power appeared as Mr. T in the first season of Epic Rap Battles of History Link Information: 

The 15th episode, called "The Final Battle", marked the end of the first season.  Answer: 15
answer:
How many episodes were in the first season of the show Power rapped for as Mr. T?


question:
Context: He was born in Montluel, in the département of Ain, France, 19 December 1799 Link Information: none Answer: none
answer:

When was the place where Cretin was born found?