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.

Q: 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

A: In what countries are the headquarters of the churches that venerate Mari as a saint?
****
Q: Context: defending champions Blackburn had promoted Kenny Dalglish to Director of Football and appointed the less successful Ray Harford as manager Link Information: none Answer: none

A: Of the men who changed positions in Blackburn, which one graduated from high school later?
****
Q: Context: Later in his time at Everton first team appearances became more uncommon for Thomson as he was displaced from the team by Joe Mercer. Thomson retired from playing in 1938 Link Information: a match against Liverpool on 10 April 1954, and finally called time on his footballing career the year after. Answer: 17

A:
How long after Thomson retired from playing did the player that replaced him on the Everton team also stop playing?
****