lawrence should stick to his day job . 
(ROOT (S (NP (NN lawrence)) (VP (MD should) (VP (VB stick) (PP (IN to) (NP (PRP$ his) (NN day) (NN job))))) (. .)))
(ROOT (S (NP (NN )) (VP (MD ) (VP (VB ) (PP (IN ) (NP (PRP$ ) (NN ) (NN ))))) (. )))