one-of-a-kind tour de force 
(ROOT (NP (NML (NML (CD one)) (HYPH -) (PP (IN of) (HYPH -) (NP (DT a) (HYPH -) (NN kind)))) (NN tour) (FW de) (NN force)))
(ROOT (NP (NML (NML (CD )) (HYPH ) (PP (IN ) (HYPH ) (NP (DT ) (HYPH ) (NN )))) (NN ) (FW ) (NN )))