an Entity references as follows:
USS Virginia (SSN-774) is a nuclear powered cruise missile attack submarine and the lead ship of her class, currently serving in the United States Navy (USN). She is the tenth vessel of the Navy to be named for the Commonwealth of Virginia, as well as the second US Navy attack submarine to be named after a state, a pattern that is common throughout her class. The submarine completed her first 20-month-long overhaul in May 2012.