With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: Journey was once named the fifth-best American rock band by USA Today.
text_B: League Island was an island in the Delaware River , part of the city of Philadelphia , just upstream from the mouth of the Schuylkill River , which was the site of the Philadelphia shipyard , which eventually became the Philadelphia Naval Shipyard , now known as The Navy Yard .. Delaware River. Delaware River. Philadelphia. Philadelphia. Schuylkill River. Schuylkill River. shipyard. shipyard. Philadelphia Naval Shipyard. Philadelphia Naval Shipyard. The Navy Yard. The Navy Yard. League Island no longer exists as an island , since the Back Channel , which separated it from the mainland , was closed at the eastern end to create land for Mustin Field , a military airfield that was closed in 1963 .. Mustin Field. Mustin Field. The western end of the channel became the present Reserve Basin , which holds the ships of the U.S. Navy 's reserve fleet .. U.S. Navy. U.S. Navy. reserve fleet. reserve fleet
not_related.