( ( List ( ( four types ) ( of ( epithelial tissue ) ) ) ) . )
(ROOT (S (VP (VB List) (NP (NP (CD four) (NNS types)) (PP (IN of) (NP (JJ epithelial) (NN tissue))))) (. .)))
List four types of epithelial 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))))) (. .)))