TASK DEFINITION: Generate a correct and concise answer for the question based on the words in the context.
PROBLEM: Context : The Sinclair Scientific calculator was a 12-function, pocket-sized scientific calculator introduced in 1974, dramatically undercutting in price other calculators available at the time. 
Question : In which year was the service entry date for Sinclair Scientific?

SOLUTION: 1974

PROBLEM: Context : Robert Sadin is an American jazz musician, conductor, arranger, composer and producer. 
Question : What was Robert Sadin's career?

SOLUTION: jazz musician

PROBLEM: Context : Ian Major (19 September 1943 -- 28 January 2009) was an Australian sports broadcaster. 
Question : When did Ian Major's death occur?

SOLUTION:
28 January 2009