( ( ( ( ( ( ( A group ) ( of ( such cells ) ) ) ( is ( a tissue ) ) ) , ) and ) ( ( in animals ) ( these ( occur ( as ( ( ( ( ( ( ( ( ( ( four ( basic types ) ) , ) ( namely epithelium ) ) , ) ( nervous tissue ) ) , ) ( muscle tissue ) ) , ) and ) ( connective tissue ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NP (DT A) (NN group)) (PP (IN of) (NP (JJ such) (NNS cells)))) (VP (VBZ is) (NP (DT a) (NN tissue)))) (, ,) (CC and) (S (PP (IN in) (NP (NNS animals))) (NP (DT these)) (VP (VBP occur) (PP (IN as) (NP (NP (CD four) (JJ basic) (NNS types)) (, ,) (NP (RB namely) (NN epithelium)) (, ,) (NP (JJ nervous) (NN tissue)) (, ,) (NP (NN muscle) (NN tissue)) (, ,) (CC and) (NP (JJ connective) (NN tissue)))))) (. .)))
A group of such cells is a tissue, and in animals these occur as four basic types, namely epithelium, nervous tissue, muscle tissue, and connective tissue.
(ROOT (S (NP (NP (CD Four) (NNS types)) (PP (IN of) (NP (NN tissue)))) (VP (VBP are) (VP (VBN found) (PP (IN in) (NP (NNS animals))))) (. .)))