With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Steven Tyler sings lead vocals for a Boston-based rock band.
text_B: NOTOC. Gmina Borow is a rural gmina -LRB- administrative district -RRB- in Strzelin County , Lower Silesian Voivodeship , in south-western Poland .. Gmina. Gmina. Voivodeship. Voivodeships of Poland. Lower Silesian. Lower Silesian Voivodeship. County. Powiat. Strzelin. Strzelin. Borow. Borow, Strzelin County. gmina. gmina. Strzelin County. Strzelin County. Lower Silesian Voivodeship. Lower Silesian Voivodeship. Poland. Poland. Its seat is the village of Borow , which lies approximately 13 km north-west of Strzelin , and 28 km south of the regional capital Wrocław .. Strzelin. Strzelin. Borow. Borow, Strzelin County. Wrocław. Wrocław. The gmina covers an area of 98.66 km2 , and as of 2006 its total population is 5,207 .. gmina. gmina
not_related.