With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Macbeth was probably first performed in 1606.
text_B: Day of Mourning is the fourth studio album by Canadian deathcore band Despised Icon .. Despised Icon. Despised Icon. deathcore. deathcore. It was released September 22 through Century Media Records .. Century Media. Century Media Records. Century Media Records. Century Media Records. The album is featured in four different editions , including ; the standard , the United States exclusive Hot Topic edition , the Europe Exclusive LTD digipak edition , the iTunes edition and the Japanese edition .. Hot Topic. Hot Topic. digipak. digipak. iTunes. iTunes
not_related.