Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.
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Question: Context : ISO 3166-2:BL is the entry for Saint Barthélemy in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1. 
Answer : International Organization for Standardization

Answer: Who set the standards for ISO 3166-2:BL?


Question: Context : An oil study for The Sorceress (c. 1911, 61x51cm, in a private collection) shows a model with dark brown hair. 
Answer : private collection

Answer: What is the name of the place where The Sorceress can be found?


Question: Context : After battling Alzheimer's disease for eleven years, Herbert Callen died in the Philadelphia suburb of Merion at the age of 73. 
Answer : Alzheimer's disease

Answer:
What medical condition was Herbert Callen suffering from?