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

Ex Input:
Context : Dell Force10 (formerly nCore Networks, Force10 Networks), was a United States company that developed and marketed 10 Gigabit and 40 Gigabit Ethernet switches for computer networking to corporate, educational, and governmental customers. 
Question : What is Force10's parent company?

Ex Output:
Dell


Ex Input:
Context : Cody Ceci (born December 21, 1993) is a Canadian professional ice hockey player with the Ottawa Senators of the National Hockey League (NHL). 
Question : Which team does Cody Ceci play for?

Ex Output:
Ottawa Senators


Ex Input:
Context : Works No. 174 started a modernization programme for the ZSU-57-2 in parallel with the beginning of its serial production in 1957, but this programme was rejected due to the development of new radar-guided SPAAGs armed with small-bore autocannons and another tracked chassis. 
Question : What was the year ZSU-57-2 entered service?

Ex Output:

1957