Assertion: trek's episode | /r/AtLocation | the star trek
Facets:
value: previously
type: TEMPORAL
Source sentences:
text: Work had already begun on an episode referred to by Coto as "Kilkenny Cats", which would have seen the return of Larry Niven's Kzinti, usually seen in his Known Space novels, and which had previously appeared in the Star Trek: The Animated Series episode "The Slaver Weapon".