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

Context : Sergey Ryazansky was launched to the International Space Station on board the Soyuz TMA-10M spacecraft on September 25, 2013 alongside Russian cosmonaut, Oleg Kotov and American astronaut Michael S. Hopkins. 
Question : What was Sergey Ryazansky's career?
astronaut

Context : Alfred Verhulst was a Brigadier General in the United States Air Force. 
Question : Which armed forces did Alfred Verhulst serve?
United States Air Force

Context : Following this last appearance, Ray Heatherton began showing signs of Alzheimer's disease. 
Question : What disease was a factor in the death of Ray Heatherton?

Alzheimer's disease