With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Roman Reigns is a Leo.
text_B: Life 's a Bitch is the sixth full-length album by the English heavy metal band Raven , released in 1987 -LRB- see 1987 in music -RRB- .. Raven. Raven ( British band ). heavy metal. Heavy metal music. 1987 in music. 1987 in music
not_related.