With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Peru has gone through economic upswing.
text_B: `` Valentine Girl '' is a 1990 ballad single by New Kids on the Block , with lead vocals by Danny Wood and Jordan Knight .. New Kids on the Block. New Kids on the Block. ballad. ballad. Danny Wood. Danny Wood. Jordan Knight. Jordan Knight. In America , it is featured on the B-side to `` Step by Step '' , and was issued as an airplay-only track .. Step by Step. Step by Step ( New Kids on the Block song ). America. North America. However , the song was officially released as a single internationally .. The song reached # 15 in Japan on the Oricon Singles Chart .
not_related.