( ( ( Remotely operated ) vehicles ) ( ( were ( ( demonstrated ( in ( the ( late ( 19th Century ) ) ) ) ) ( in ( ( the form ) ( of ( ( several types ) ( of ( ( remotely controlled ) torpedos ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (ADJP (RB Remotely) (VBN operated)) (NNS vehicles)) (VP (VBD were) (VP (VBN demonstrated) (PP (IN in) (NP (DT the) (JJ late) (JJ 19th) (NNP Century))) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NP (JJ several) (NNS types)) (PP (IN of) (NP (ADJP (RB remotely) (VBN controlled)) (NNS torpedos))))))))) (. .)))
Remotely operated vehicles were demonstrated in the late 19th Century in the form of several types of remotely controlled torpedos.
(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)))))))) (. .)))