Question: Which company produced the science fiction hit that the American screenwriter born on September 30, 1946 was involved with? 
Sentence (from "Alien (film)"): Alien is a 1979 science-fiction horror film directed by Ridley Scott, and starring Sigourney Weaver, Tom Skerritt, Veronica Cartwright, Harry Dean Stanton, John Hurt, Ian Holm and Yaphet Kotto.
Relevant evidence: Yes