( ( Multicelled organisms ) ( ( are ( composed ( of ( ( ( ( organs , ) ( organs ( of tissues ) ) ) , ) ( tissues ( of cells ) ) ) ) ) ) . ) )
(ROOT (S (NP (JJ Multicelled) (NNS organisms)) (VP (VBP are) (VP (VBN composed) (PP (IN of) (NP (NP (NNS organs)) (, ,) (NP (NP (NNS organs)) (PP (IN of) (NP (NNS tissues)))) (, ,) (NP (NP (NNS tissues)) (PP (IN of) (NP (NNS cells)))))))) (. .)))
Multicelled organisms are composed of organs, organs of tissues, tissues of cells.
(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.