Clinton used a floor mop to clean up the dirt he had tracked onto the shiny floor of an elementary school.
( Clinton ( ( used ( ( a floor ) ( mop ( to ( ( clean up ) ( ( the dirt ) ( he ( had ( tracked ( onto ( ( the ( shiny floor ) ) ( of ( an ( elementary school ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Clinton)) (VP (VBD used) (S (NP (DT a) (NN floor)) (VP (VB mop) (S (VP (TO to) (VP (VB clean) (PRT (RP up)) (NP (NP (DT the) (NN dirt)) (SBAR (S (NP (PRP he)) (VP (VBD had) (VP (VBN tracked) (PP (IN onto) (NP (NP (DT the) (JJ shiny) (NN floor)) (PP (IN of) (NP (DT an) (JJ elementary) (NN school)))))))))))))))) (. .)))
Clinton cleaned up the floor of an elementary school with a floor mop.
( Clinton ( ( ( ( cleaned up ) ( ( the floor ) ( of ( an ( elementary school ) ) ) ) ) ( with ( a ( floor mop ) ) ) ) . ) )
(ROOT (S (NP (NNP Clinton)) (VP (VBD cleaned) (PRT (RP up)) (NP (NP (DT the) (NN floor)) (PP (IN of) (NP (DT an) (JJ elementary) (NN school)))) (PP (IN with) (NP (DT a) (NN floor) (NN mop)))) (. .)))