( ( Difficulties ( of ( pregnancy ( that ( ( are usually ) ( associated ( with ( the ( third trimester ) ) ) ) ) ) ) ) ) . )
(ROOT (NP (NP (NNS Difficulties)) (PP (IN of) (NP (NP (NN pregnancy)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (ADVP (RB usually)) (VP (VBN associated) (PP (IN with) (NP (DT the) (JJ third) (NN trimester))))))))) (. .)))
Difficulties of pregnancy that are usually associated with the third trimester.
(ROOT (S (NP (DT The) (JJ third) (NN trimester)) (VP (VBZ is) (VP (VBN associated) (PP (IN with) (NP (JJ rapid) (JJ fetal) (NN growth))))) (. .)))