Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Context : Mainova AG was formed in 1998 through the merger of Stadtwerke Frankfurt am Main GmbH and Maingas AG. 
Answer : Stadtwerke Frankfurt
What is Mainova's parent company?

Context : The Power of the Daleks is the completely missing third serial of the fourth season in the British science fiction television series Doctor Who, which was first broadcast in six weekly parts from 5 November to 10 December 1966. 
Answer : Doctor Who
What is the series that The Power of the Daleks is a part of?

Context : Anastasios Papoulas (Greek: Αναστάσιος Παπούλας, 1/13 January 1857 -- 24 April 1935) was a Greek general, most notable as the Greek commander-in-chief during most of the Greco-Turkish War of 1919--22. 
Answer : Greco-Turkish War

In which war did Anastasios Papoulas fight?