Sentence:  The Orioles tonight retained the distinction of <WSD>being</WSD> the only winless team among the eighteen Major-League clubs as they dropped their sixth straight spring exhibition decision , this one to the Kansas City Athletics by a score of 5 to 3 . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)