TASK DEFINITION: Generate a correct and concise answer for the question based on the words in the context.
PROBLEM: Context : Based on the TR-77-580 (Romanian-built version of the Soviet T-55 tank), the TR-85 tank was developed from 1978 to 1985 and produced from 1986 until 1990. 
Question : Which was the official year for the approval of TR-85?

SOLUTION: 1986

PROBLEM: Context : ``Super Fun Time'' is the seventh episode in the twelfth season of the American animated television series South Park. 
Question : Which series was Super Fun Time in?

SOLUTION: South Park

PROBLEM: Context : ``Madness Ends'' is the thirteenth episode and season finale of the second season of the FX anthology television series American Horror Story. 
Question : Which series is Madness Ends a part of?

SOLUTION:
American Horror Story