With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Kato Kaelin is a radio technician.
text_B: April in Portugal may refer to  :. `` April in Portugal '' -LRB- song -RRB- , a popular song , also known as `` The Whisp ` ring Serenade ''. April in Portugal -LRB- film -RRB- , a 1954 film featuring the song
not_related.