They are the four sentences you always insert in plagiarized papers to throw the professor off track.
( They ( ( are ( ( the ( four sentences ) ) ( you ( always ( ( insert ( in ( plagiarized papers ) ) ) ( to ( ( throw ( the professor ) ) ( off track ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP They)) (VP (VBP are) (NP (NP (DT the) (CD four) (NNS sentences)) (SBAR (S (NP (PRP you)) (ADVP (RB always)) (VP (VB insert) (PP (IN in) (NP (JJ plagiarized) (NNS papers))) (S (VP (TO to) (VP (VB throw) (NP (DT the) (NN professor)) (PP (IN off) (NP (NN track))))))))))) (. .)))
Professors can be thrown off track by four particular sentences in an otherwise plagiarized paper.
( Professors ( ( can ( be ( ( ( thrown off ) track ) ( by ( ( four ( particular sentences ) ) ( in ( an ( ( otherwise plagiarized ) paper ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Professors)) (VP (MD can) (VP (VB be) (VP (VBN thrown) (PRT (RP off)) (NP (NN track)) (PP (IN by) (NP (NP (CD four) (JJ particular) (NNS sentences)) (PP (IN in) (NP (DT an) (ADJP (RB otherwise) (JJ plagiarized)) (NN paper)))))))) (. .)))