( There ( ( are ( four ( animal ( tissue types ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (CD four) (NN animal) (NN tissue) (NNS types))) (. .)))
There are four animal tissue types.
(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))))) (. .)))