With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Kendrick Lamar released a debut mixtape.
text_B: The MAT / 5 is an Italian circular , plastic-cased minimum metal blast resistant anti-tank blast mine .. Italian. Italy. minimum metal. minimum metal mine. blast resistant. blast resistant mine. anti-tank blast mine. anti-tank mine. It uses a pneumatic fuze which is resistant to shock and blast , and is also claimed to be resistant to mine flails and mine rollers .. The mine 's plastic case is waterproof , and it can be laid in shallow water .. Additionally the mine will function upside down .. The mine can be fitted with anti-handling devices .. The mine is no longer in production .
not_related.