With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Wyatt Earp served as a bouncer.
text_B: The tibialis posterior is the most central of all the leg muscles , and is located in the deep posterior compartment of the leg .. leg. leg. posterior compartment of the leg. posterior compartment of leg. It is the key stabilizing muscle of the lower leg .. leg. leg. muscle. muscle. lower leg. human leg. Blood is supplied to the muscle by the posterior tibial artery , and innervation is via the tibial nerve .. muscle. muscle. posterior tibial artery. posterior tibial artery. tibial nerve. tibial nerve
not_related.