With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Psychology explores behavior and mental processes.
text_B: Broadcast to the World is the sixth studio album released by American punk rock band Zebrahead .. Zebrahead. Zebrahead. American. United States. punk rock. punk rock. The album was influenced by Lit 's A Place in the Sun -LRB- 1999 -RRB- .. Lit. Lit ( band ). A Place in the Sun. A Place in the Sun ( Lit album ). It is their first album with new co-vocalist / rhythm guitarist Matty Lewis , who replaced former member Justin Mauriello after he left the group in late 2004 .. Matty Lewis. Matty Lewis. Justin Mauriello. Justin Mauriello. Shawn Harris of The Matches created the artwork for the album , and for the band 's follow-up album , Phoenix .. The Matches. The Matches. Phoenix. Phoenix ( Zebrahead album )
not_related.