She progressed to a vaginal delivery.
 The patient was pregnant. 
(ROOT (S (NP (PRP She)) (VP (VBD progressed) (PP (TO to) (NP (DT a) (JJ vaginal) (NN delivery)))) (. .)))
(ROOT (S (NP (DT The) (NN patient)) (VP (VBD was) (ADJP (JJ pregnant))) (. .)))
( She ( ( progressed ( to ( a ( vaginal delivery ) ) ) ) . ) )
( ( The patient ) ( ( was pregnant ) . ) )