( There ( ( are ( ( 8 ( vehicle classes ) ) ( that ( take ( ( the form ) ( of ( remote ( controlled vehicles ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBP are) (NP (NP (CD 8) (NN vehicle) (NNS classes)) (SBAR (WHNP (WDT that)) (S (VP (VBP take) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (JJ remote) (VBN controlled) (NNS vehicles))))))))) (. .)))
There are 8 vehicle classes that take the form of remote controlled vehicles.
(ROOT (S (NP (NNP Remote-control) (NNS vehicles)) (VP (VBP are) (ADJP (JJ able) (S (VP (TO to) (VP (VB go) (PP (TO to) (NP (DT the) (JJS deepest) (NN ocean) (NN floor)))))))) (. .)))