Sentence:  It was done with great taste , <WSD>was</WSD> big and spacious , sumptuous as the dreams of any peasant in its courtly costumes , but sumptuous in a muted , pastel-like style , with rich , quiet harmonies of color between the costumes themselves and between the costumes and the scenery . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)