Sentence:  But when tiny , 145 - pound Albert Gregory Pearson of the Los Angeles Angels , who once caught three straight fly balls in center field because , as a teammate explained , `` the other team thought no one <WSD>was</WSD> out there '' , hits seven home runs in four months ( three more than his total in 1958 , 1959 , and 1960 ) , his achievement borders on the ridiculous . 
Meaning of the word marked with <WSD> tags:  have an existence, be extant