With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Avril Lavigne is a musician.
text_B: Barclay Radebaugh -LRB- born September 14 , 1965 -RRB- is the head men 's basketball coach at Charleston Southern University .. Charleston Southern. Charleston Southern Buccaneers men's basketball. Charleston Southern University. Charleston Southern University. Coach Radebaugh is a two-time Big South Conference Coach of the Year -LRB- 2012 , 2015 -RRB- and in 2015 led CSU to the regular-season Big South Conference Championship - and also the most regular season wins in CSU history -LRB- 19 -RRB- .. Big South. Big South Conference
not_related.