TASK DEFINITION: Generate a correct and concise answer for the question based on the words in the context.
PROBLEM: Context : The Boeing 601 (sometimes referred to as the BSS-601, and previously as the HS-601) is a communications satellite bus introduced in 1987 by Hughes Space and Communications Company. 
Question : What year was Boeing 601 commissioned?

SOLUTION: 1987

PROBLEM: Context : Otto Preminger died in New York City, New York in 1986, aged 80, from lung cancer while suffering from Alzheimer's disease. 
Question : What medical condition did Otto Preminger have at the end of his life?

SOLUTION: Alzheimer's disease

PROBLEM: Context : Two Mules for Sister Sara is an American-Mexican western film starring Shirley MacLaine (billed above Clint Eastwood in the film's credits, but not on the poster) set during the French intervention in Mexico. 
Question : Which place is Two Mules for Sister Sara in?

SOLUTION:
Mexico