Definition: In this task, five ordered key facts are given. All the given facts are expressed in natural language. Your job is to generate a story 100 to 1000 words long, that includes all the facts given as input in their order of appearance while expanding upon them to produce a broader, yet coherent, narrative.
Input: Fact1: Garth A7 travels in time to prevent Professor Sigmund Marx from revealing new discovery, Fact2: idea create tyranny in Garth 's time, Fact3: Garth gets her to summon friend to operate on him to remove homing device used by Tracers to track him, Fact4: future wiped out as result, Fact5: so common with time travel films ignore paradoxes in favor of plot

Garth A7 Michael Rennie, a cyborg from the future world of 2087, travels back in time to 1966 to prevent Professor Sigmund Marx Eduard Franz from revealing his new discovery, an idea that will make mind control possible and create a tyranny in Garths time. He is pursued by two Tracers also cyborgs out to stop him. Garth enlists the help of Dr. Sharon Mason Karen Steele, Marxs assistant. He gets her to summon her friend, medical doctor Zeller Warren Stevens to operate on him to remove a homing device used by the Tracers to track him. The local sheriff Wendell Corey also becomes involved. Garth defeats the Tracers and convinces Professor Marx to keep his discovery secret. Then, with his future wiped out as a result, Garth ceases to exist; the people who helped him dont even remember him. It is which came first, the chicken or the egg? plot twist, so common with time travel films, which ignore paradoxes in favor of plot. If the hero does change history, and ceases to exist as history is reqritten, then he will not be there in the future to go back and make the change, supporting the scientific rule that the past cannot be altered.