With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: One style of the mandolin has yet to be the Neapolitan mandolin.
text_B: Jeffrey Lee Pierce -LRB- June 27 , 1958 -- March 31 , 1996 -RRB- was an American singer , songwriter and guitarist .. He was one of the founding members of the 1980s punk band The Gun Club , and also released material as a solo artist .. The Gun Club. The Gun Club ( band )
not_related.