a fascinating curiosity piece -- fascinating , that is , for about ten minutes 
(ROOT (NP (NP (DT a) (JJ fascinating) (NN curiosity) (NN piece)) (, --) (ADJP (JJ fascinating) (PRN (, ,) (S (NP (DT that)) (VP (VBZ is))) (, ,)) (PP (IN for) (NP (QP (RB about) (CD ten)) (NNS minutes))))))
(ROOT (NP (NP (DT ) (JJ ) (NN ) (NN )) (, ) (ADJP (JJ ) (PRN (, ) (S (NP (DT )) (VP (VBZ ))) (, )) (PP (IN ) (NP (QP (RB ) (CD )) (NNS ))))))