( ( ( organ ( A structure ) ) ( consisting ( of ( ( ( ( two or ) more ) tissues ) ( that ( performs ( a ( specific function ) ) ) ) ) ) ) ) . )
(ROOT (NP (NP (NP (NN organ)) (NP (DT A) (NN structure))) (VP (VBG consisting) (PP (IN of) (NP (NP (QP (CD two) (CC or) (JJR more)) (NNS tissues)) (SBAR (WHNP (WDT that)) (S (VP (VBZ performs) (NP (DT a) (JJ specific) (NN function)))))))) (. .)))
organ A structure consisting of two or more tissues that performs a specific function.
(ROOT (S (NP (NNS Roundworms)) (VP (VBP exemplify) (NP (NP (JJ organ-level) (NN organization)) (, ,) (SBAR (WHADVP (WRB where)) (S (NP (NP (QP (CD two) (CC or) (JJR more)) (NNS types)) (PP (IN of) (NP (NNS tissues)))) (VP (VBP work) (ADVP (RB together)) (S (VP (TO to) (VP (VB perform) (NP (DT a) (JJ particular) (NN function)) (PP (IN as) (NP (DT an) (NN organ))))))))))) (. .)))