( ( In spring ) ( , ( ( ( flowering trees ) ( - ( ( ( ( crab apple ) , ) ( ( lilac and ) apple ) ) - ) ) ) ( ( perfume ( the air ) ) ; ) ) ) )
(ROOT (S (PP (IN In) (NP (NN spring))) (, ,) (NP (NP (JJ flowering) (NNS trees)) (PRN (: -) (NP (NP (NN crab) (NN apple)) (, ,) (NP (NN lilac) (CC and) (NN apple))) (: -))) (VP (VBZ perfume) (NP (DT the) (NN air))) (: ;)))
In spring, flowering trees - crab apple, lilac and apple - perfume the air;
(ROOT (S (NP (NP (DT A) (NN sign)) (SBAR (IN that) (S (NP (DT an) (NN apple) (NN tree)) (VP (VBZ is) (VP (VBG going) (S (VP (TO to) (VP (VB start) (NP (VBG growing) (NNS apples)))))))))) (VP (VBZ is) (SBAR (IN that) (S (NP (DT the) (NN tree)) (VP (VBZ has) (NP (NNS flowers)))))) (. .)))