nothing less than a provocative piece of work 
(ROOT (NP (NP (NN nothing)) (ADJP (ADJP (JJR less)) (PP (IN than) (NP (NP (DT a) (JJ provocative) (NN piece)) (PP (IN of) (NP (NN work))))))))
(ROOT (NP (NP (NN )) (ADJP (ADJP (JJR )) (PP (IN ) (NP (NP (DT ) (JJ ) (NN )) (PP (IN ) (NP (NN ))))))))