With no explanation, label text_A→text_B with either "entailment" or "not-entailment".
text_A: Joe and Fred like to scuba dive in Puget Sound. One time they found a big wolf eel underwater. The fish sunk his teeth deeply into Joe's scalp. Fred cut of the head of the fish while it was still attached to Joe. Only a doctor at the hospital could safely remove the fish head.
text_B: Joe and Fred are friends. starts after Only a doctor at the hospital could safely remove the fish head
not-entailment.