On the day of admission, she had difficulty driving, she pulled over and passed out.
 The patient lost consciousness. 
(ROOT (S (PP (IN On) (NP (NP (DT the) (NN day)) (PP (IN of) (NP (NN admission))))) (, ,) (S (NP (PRP she)) (VP (VBD had) (S (NP (NN difficulty)) (VP (VBG driving))))) (, ,) (NP (PRP she)) (VP (VP (VBD pulled) (ADVP (RP over))) (CC and) (VP (VBN passed) (PRT (RP out)))) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBD lost) (NP (NN consciousness))) (. .)))
( ( On ( ( the day ) ( of admission ) ) ) ( , ( ( she ( had ( difficulty driving ) ) ) ( , ( she ( ( ( ( pulled over ) and ) ( passed out ) ) . ) ) ) ) ) )
( ( The patient ) ( ( lost consciousness ) . ) )