instruction:
Generate a correct and concise answer for the question based on the words in the context.
question:
Context : The GCR Class 1 was a class of steam locomotives designed by John G. Robinson for the Great Central Railway, and introduced to service between December 1912 and 1913.
Question : What was the year that GCR Class 1 entered service?
answer:
December 1912

question:
Context : Sunil Shroff is a urologist and transplant surgeon from India.
Question : What was Sunil Shroff's occupation?
answer:
urologist

question:
Context : 5 Cancri (5 Cnc) is a star in the constellation Cancer.
Question : What is the constellation that 5 Cancri is a part of?
answer:
Cancer