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))))))))))) (. .)))
If you put these four sentences into your paper, professors will immediately know that it's been plagiarized.
( ( If ( you ( ( put ( these ( four sentences ) ) ) ( into ( your paper ) ) ) ) ) ( , ( professors ( ( ( will immediately ) ( know ( that ( it ( 's ( been plagiarized ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (PRP you)) (VP (VBD put) (NP (DT these) (CD four) (NNS sentences)) (PP (IN into) (NP (PRP$ your) (NN paper)))))) (, ,) (NP (NNS professors)) (VP (MD will) (ADVP (RB immediately)) (VP (VB know) (SBAR (IN that) (S (NP (PRP it)) (VP (VBZ 's) (VP (VBN been) (VP (VBN plagiarized)))))))) (. .)))