Sentence:  A comedy in Three Acts '' , in which , under `` Personages '' , Henrietta appeared as `` A Schoolmarm '' , and Bertha , who was only a trifle less brilliant in high school than Henrietta had <WSD>been</WSD> , appeared as `` Dummkopf '' . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)