With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Stephen Rider is an American film and television director.
text_B: Ragazza alla pari -LRB- internationally released as The Best and Au-Pair Girl -RRB- is a 1976 commedia sexy all ` italiana directed by Mino Guerrini .. Mino Guerrini. Mino Guerrini
not_related.