 Look, the sun is sleepy, going to bed,  said 2 1/2-year-old David while watching the sun disappear below the horizon at the end of a day at the beach.
( ( ( Look , ) ( ( the sun ) ( is sleepy ) ) ) ( , ( ( going ( to bed ) ) ( , ( ( said ( ( 2 1/2 - ) ( ( year-old David ) ( while ( ( watching ( the sun ) ) ( disappear ( below ( ( the horizon ) ( at ( ( the end ) ( of ( ( a day ) ( at ( the beach ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) ) ) )
(ROOT (S (S (VP (VB Look) (, ,) (S (NP (DT the) (NN sun)) (VP (VBZ is) (ADJP (JJ sleepy)))))) (, ,) (S (VP (VBG going) (PP (TO to) (NP (NN bed))))) (, ,) (VP (VBD said) (NP (NP (CD 2 1/2)) (: -) (NP (NP (JJ year-old) (NNP David)) (SBAR (IN while) (S (S (VP (VBG watching) (NP (DT the) (NN sun)))) (VP (VBP disappear) (PP (IN below) (NP (NP (DT the) (NN horizon)) (PP (IN at) (NP (NP (DT the) (NN end)) (PP (IN of) (NP (NP (DT a) (NN day)) (PP (IN at) (NP (DT the) (NN beach))))))))))))))) (. .)))
The boy was confused and said the sun woke up when it disappeared behind the horizon.
( ( The boy ) ( ( ( ( was confused ) and ) ( said ( ( the sun ) ( ( woke up ) ( when ( it ( disappeared ( behind ( the horizon ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN boy)) (VP (VP (VBD was) (ADJP (VBN confused))) (CC and) (VP (VBD said) (SBAR (S (NP (DT the) (NN sun)) (VP (VBD woke) (PRT (RP up)) (SBAR (WHADVP (WRB when)) (S (NP (PRP it)) (VP (VBD disappeared) (PP (IN behind) (NP (DT the) (NN horizon))))))))))) (. .)))