With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Las Vegas is the largest city within Utah.
text_B: `` Bruce '' is a song by Australian musician Rick Springfield .. Rick Springfield. Rick Springfield. The song appeared on his 1984 album , Beautiful Feelings , reaching No. 27 on the U.S. Billboard Hot 100 .. Beautiful Feelings. Beautiful Feelings. Billboard. Billboard ( magazine ). Hot 100. Hot 100
not_related.