Question: In what year was the actor born who appeared in both Assault on Precinct 13 and every Rocky installment?
Sentence (from "Assault on Precinct 13 (1976 film)"): It stars Austin Stoker as a police officer who defends a defunct precinct against an attack by a relentless criminal gang, along with Darwin Joston as a convicted murderer who helps him.
Relevant evidence: Yes