Sentence:  An unusual , if <WSD>not</WSD> extraordinary , rendering of the classic myth that involves the rescue of Prometheus from the rock by the U.S. Cavalry was given last week in the warehouse of the Albany Leather Conduit Company amid cheers of `` Hubba hubba '' and `` Yalagaloo pip pip '' ! 
Meaning of the word marked with <WSD> tags:  negation of a word or group of words