( Organs ( ( are ( ( structures ( of ( definite form ) ) ) ( that ( ( ( are ( composed ( of ( ( ( two or ) more ) ( different tissues ) ) ) ) ) and ) ( have ( speciflc functions ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Organs)) (VP (VBP are) (NP (NP (NNS structures)) (PP (IN of) (NP (JJ definite) (NN form))) (SBAR (WHNP (WDT that)) (S (VP (VP (VBP are) (VP (VBN composed) (PP (IN of) (NP (QP (CD two) (CC or) (JJR more)) (JJ different) (NNS tissues))))) (CC and) (VP (VBP have) (NP (JJ speciflc) (NNS functions)))))))) (. .)))
Organs are structures of definite form that are composed of two or more different tissues and have speciflc functions.
(ROOT (S (NP (DT A) (PRN (-LRB- -LRB-) (NP (NN n)) (-RRB- -RRB-)) (NN organ)) (VP (VBZ is) (NP (NP (DT a) (NN structure)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN composed) (PP (IN of) (NP (NP (QP (CD one) (CC or) (JJR more)) (NNS types)) (PP (IN of) (NP (NNS tissues))))))))))) (. .)))
A(n) organ is a structure that is composed of one or more types of tissues.