( ( This material ) ( ( ( ( contains ( no urea ) ) and ) ( is ( ( a ( safe material ) ) ( for ( surface application ) ) ) ) ) . ) )
(ROOT (S (NP (DT This) (NN material)) (VP (VP (VBZ contains) (NP (DT no) (NN urea))) (CC and) (VP (VBZ is) (NP (NP (DT a) (JJ safe) (NN material)) (PP (IN for) (NP (NN surface) (NN application)))))) (. .)))
This material contains no urea and is a safe material for surface application.
(ROOT (S (NP (NNS Animals)) (VP (MD can) (VP (VP (VB transport) (NP (NP (DT the) (NN waste) (NN material)) (VP (VBN known) (PP (IN as) (NP (NP (NN urea)) (PP (IN in) (NP (DT the) (JJ circulatory) (NN system)))))))) (CC and) (VP (VB store) (NP (PRP it)) (ADVP (RB safely)) (PP (IN at) (NP (JJ high) (NNS concentrations)))))) (. .)))