Sentence:  She <WSD>was</WSD> the John Harvey , one of those Atlantic sea-horses that had sailed to Bari to bring beans , bombs , and bullets to the U. S. Fifteenth Air Force , to Field Marshal Montgomery 's Eighth Army then racing up the calf of the boot of Italy in that early December of 1943 . 
Meaning of the word marked with <WSD> tags:  be identical to; be someone or something