( ( ( ( Y Y-ORGAN ) ( ( One type ) ( of ( endocrine tissue ) ) ) ) ( in crustaceans ) ) ; )
(ROOT (NP (NP (NNP Y) (NNP Y-ORGAN)) (NP (NP (CD One) (NN type)) (PP (IN of) (NP (JJ endocrine) (NN tissue)))) (PP (IN in) (NP (NNS crustaceans))) (: ;)))
Y Y-ORGAN One type of endocrine tissue in crustaceans;
(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.