Generate a correct and concise answer for the question based on the words in the context.

Context : Blind Willie Walker died in Greenville in 1933 at age 37 of congenital syphilis, which may have been the reason for his blindness.
Question : What led to Blind Willie Walker's death?
blindness

Context : The Calabash Nebula, also known as the Rotten Egg Nebula or by its technical name OH 231.84 +4.22, is a protoplanetary nebula (PPN) 1.4 light years (13 Pm) long and located some 5,000 light years (47 Em) from Earth in the constellation Puppis.
Question : What is the constellation that is made with Calabash Nebula?
Puppis

Context : Daniel Hugo has a B.A.Honours degree (Afrikaans and Dutch) from the University of Stellenbosch and later did his master's degree at the University of Pretoria.
Question : What university did Daniel Hugo attend?
University of Pretoria