With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The Guest stars American film actors.
text_B: Leland Jones Orser -LRB- born 1960 / 1961 -RRB- -RRB- is an American film and television actor .. film. film. television. television. actor. actor. Orser is primarily a character actor , and has appeared in small roles in a wide variety of films and television series , including Chief of Surgery Dr. Lucien Dubenko on the television series ER .. television. television. actor. actor. character actor. character actor. Dr. Lucien Dubenko. Lucien Dubenko#Lucien Dubenko. ER ( TV series )
related.