( Students ( ( should ( ( ( deliver ( notes ( concerning ( attendance ( , ( ( tardiness and ) dismissal ) ) ) ) ) ) ( to ( ( ( their teacher ) , ) ( first thing ) ) ) ) ( in ( the morning ) ) ) ) . ) )
(ROOT (S (NP (NNS Students)) (VP (MD should) (VP (VB deliver) (NP (NP (NNS notes)) (PP (VBG concerning) (NP (NN attendance) (, ,) (NNS tardiness) (CC and) (NN dismissal)))) (PP (TO to) (NP (NP (PRP$ their) (NN teacher)) (, ,) (NP (JJ first) (NN thing)))) (PP (IN in) (NP (DT the) (NN morning))))) (. .)))
Students should deliver notes concerning attendance, tardiness and dismissal to their teacher, first thing in the morning.
(ROOT (S (SBAR (IN If) (S (NP (DT an) (NN accident)) (VP (VBZ happens) (PP (IN during) (NP (DT a) (NN science) (NN experiment)))))) (, ,) (NP (NP (DT the) (JJ first) (NN thing)) (SBAR (S (NP (DT a) (NN student)) (VP (MD should) (VP (VB do)))))) (VP (VBZ is) (NP (NP (NN report)) (PP (TO to) (NP (DT the) (NN teacher))))) (. .)))