With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Selena Gomez uses Instagram to share pictures.
text_B: Castano Primo is a city and comune in Province of Milan , in the Italian region Lombardy , located about 35 km northwest of Milan .. Lombardy. Lombardy. Milan. Milan. comune. comune. Province of Milan. Province of Milan. Italian. Italy. Castano Primo borders the following municipalities  : Lonate Pozzolo , Vanzaghello , Magnago , Nosate , Buscate , Cameri , Turbigo , Robecchetto con Induno , Cuggiono .. Lonate Pozzolo. Lonate Pozzolo. Vanzaghello. Vanzaghello. Magnago. Magnago. Nosate. Nosate. Buscate. Buscate. Cameri. Cameri. Turbigo. Turbigo. Robecchetto con Induno. Robecchetto con Induno. Cuggiono. Cuggiono. It received the honorary title of city with a presidential decree on October 11 , 1984 .
not_related.