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

Input: Consider Input: Context : The RPG-16 was developed in 1968, and adopted by the Soviet Army in 1970 for special operation teams and the Soviet airborne troops (VDV). 
Question : What year was the service entry date for RPG-16?

Output: 1970


Input: Consider Input: Context : Lotus Software (called Lotus Development Corporation before its acquisition by IBM) was an American software company based in Massachusetts. 
Question : What is Lotus Software's parent company?

Output: IBM


Input: Consider Input: Context : Mark Lambert Bristol (April 17, 1868 -- May 13, 1939) was a Rear Admiral in the United States Navy. 
Question : In what military organization did Mark Lambert Bristol serve?


Output: United States Navy