TASK DEFINITION: Generate a correct and concise answer for the question based on the words in the context.
PROBLEM: Context : McTeague is a dentist of limited intellect from a poor miner's family, who has opened a dentist shop on Polk Street in San Francisco. 
Question : Which place does McTeague exist in?

SOLUTION: San Francisco

PROBLEM: Context : Samuel Harriman (October 1826 -- August 25, 1897) was a colonel in the Union Army during the American Civil War who was nominated and confirmed for appointment to the grade of brevet brigadier general in 1866. 
Question : Which war did Samuel Harriman serve in?

SOLUTION: American Civil War

PROBLEM: Context : The Sinclair President is a calculator released by Sinclair Radionics in early 1978. 
Question : What year was Sinclair President commissioned?

SOLUTION:
1978