Q: 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.
Context : Leonidas died in 2004 in Cotia, Sao Paulo, because of complications due to Alzheimer's disease, from which he had been suffering since 1974.
Answer : Alzheimer's disease
A:
What medical condition was Leonidas suffering from?