Sentence:  As with the penultimate Giselle release ( Wolff 's abridgment for RCA Victor ) I find the cleaner , less razor edged monophonic version , for all its lack of big stage spaciousness , the more aurally tolerable - but this may <WSD>be</WSD> the result of processing defects in my SD copies . 
Meaning of the word marked with <WSD> tags:  have the quality of being; (copula, used with an adjective or a predicate noun)