Instruct: Given a premise, retrieve a hypothesis that is entailed by the premise.
Query: The Messerschmitt Me 263 "Scholle" (plaice) was a rocket-powered fighter aircraft developed from the Me 163 "Komet" towards the end of World War II. Three prototypes were built but never flown under their own power as the rapidly deteriorating military situation in Germany prevented the completion of the test program.
Germany was losing the war which prevented a test program for several rocket powered fighter planes.
The Mitsubishi J8M "Shūsui"was never to be used after the World War II
The Messerschmitt Me 263 was built in 1935.
All but one Mitsubishi J8M "Shūsui"was destroyed after the World War II 
The Mitsubishi J8M "Shūsui"was destroyed after the World War II 
The Mitsubishi J8M "Shūsui"was ordered to be destroyed after the World War II because of its danger
Towards the end of WW 2 a fighter plane powered by rocket power was developed.
The Messerschmitt Me 263 was built in 1942.
the MiG-31 uses the R-33
The Avro 523 Pike was inspired by Japanese airplanes
The was one machine produced, but more planned.
The 8.8 cm Flak was only used by weak soldiers
The Messerschmitt Me 263 was built in Munich.
The Messerschmitt Me 263 was first designed in Moscow.
The Falcon 9 rocket had only 30 flights before this one.
It was only intended to go for the SR-71
The 8.8 cm Flak was invented after World War II
The 8.8 cm Flak was only used by strong soldiers
The 337 Squadron has no engines
Stahlschmidt flew fighter planes during WWII
the Rolls-Royce Merlin engine was the only engine that would fit these planes.
The rockets were not defused.
The Messerschmitt Me 263 was built in Munich.
The Messerschmitt Me 263 was built in 1942.
The Messerschmitt Me 263 flew in battle during WWII.