With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: The brown bear is an animal.
text_B: Boza Jovanovic was the first drummer of the Serbian rock band Idoli .. Idoli. Idoli. Serbian rock. Serbian rock. He was the band member until 1982 and released two singles and one EP with the band .. Extended play
not_related.