Instruct: Given a premise, retrieve a hypothesis that is entailed by the premise.
Query: PSR B1919+21 is a pulsar with a period of 1.3373 seconds and a pulse width of 0.04 seconds. Discovered by Jocelyn Bell Burnell and Antony Hewish on November 28, 1967, it is the first discovered radio pulsar. The power and regularity of the signals were briefly thought to resemble an extraterrestrial beacon, leading the source to be nicknamed LGM-1 (for "little green men").
PSR B1919+21 was named after aliens. 
According to the patent abstract, there were multiple pancake signals at different frequencies.
6PR is a loud radio station.
Aurora Borealis crystals give off vibration.
The famous release by this company, which was called "Planet 51" was inspired by area 51
6PR is a quiet radio station.
The Leningrad Atomic Power Station in Sosnovyi Bor underwent an emergency shutdown in the year after 1990.
On 24 March 1992, the number 1+2 power generating unit at the Leningrad Atomic Power Station
Over a year and a half elapsed between the time the time that the asteroid was discovered and the demise of the astronaut during his return to earth.
The Leningrad Atomic Power Station in Sosnovyi Bor underwent an emergency shutdown in the year prior to 1994.
According to the patent abstract, there were multiple power supply handwritten signatures at different frequencies.
There was a mission called the Gemini 8.
There is a special "base station" on the ground that has been designed to safely receive and transmit radio signals in the aircraft.
there was a primordial explosion
The first signal of danger was a bang
Project Gasbuggy caused radiation poisoning.
The asteroid was discovered within the first three years of the 21st century.
He saw the first missle.
He had the rare program on the air 
In march of 1992, the number 3 power generating unit at the Leningrad Atomic Power Station
The photo shows was said to be the test launch of an intermediate range Hwasong-12 in North Korea.
Prinair Flight 191 was an international flight.
Jocelyn Bell was the only person who discovered PSR B1919+21
Aliens live on a planet around PSR B1919+21
PSR B1919+21 was discovered 200 years ago.