On the days I go to my office, I wear a flannel shirt with no necktie if the weather is cool.
( ( ( On ( the days ) ) ( I ( go ( to ( my office ) ) ) ) ) ( , ( I ( ( ( ( wear ( a ( flannel shirt ) ) ) ( with ( no necktie ) ) ) ( if ( ( the weather ) ( is cool ) ) ) ) . ) ) ) )
(ROOT (S (S (PP (IN On) (NP (DT the) (NNS days))) (NP (PRP I)) (VP (VBP go) (PP (TO to) (NP (PRP$ my) (NN office))))) (, ,) (NP (PRP I)) (VP (VBP wear) (NP (DT a) (JJ flannel) (NN shirt)) (PP (IN with) (NP (DT no) (NN necktie))) (SBAR (IN if) (S (NP (DT the) (NN weather)) (VP (VBZ is) (ADJP (JJ cool)))))) (. .)))
On cool days, I wear a flannel shirt to the office with jeans.
( ( On ( cool days ) ) ( , ( I ( ( ( wear ( a ( flannel shirt ) ) ) ( to ( ( the office ) ( with jeans ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN On) (NP (JJ cool) (NNS days))) (, ,) (NP (PRP I)) (VP (VBP wear) (NP (DT a) (JJ flannel) (NN shirt)) (PP (TO to) (NP (NP (DT the) (NN office)) (PP (IN with) (NP (NNS jeans)))))) (. .)))