( ( Middle adulthood ) ( ( seems ( to ( be ( ( a ( ( particularly difficult ) time ) ) ( for ( persons ( in ( the sample ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP Middle) (NNP adulthood)) (VP (VBZ seems) (S (VP (TO to) (VP (VB be) (NP (NP (DT a) (ADJP (RB particularly) (JJ difficult)) (NN time)) (PP (IN for) (NP (NP (NNS persons)) (PP (IN in) (NP (DT the) (NN sample)))))))))) (. .)))
Middle adulthood seems to be a particularly difficult time for persons in the sample.
(ROOT (S (NP (NNP Menopause)) (VP (VBZ occurs) (PRT (RP in)) (PP (IN in) (NP (JJ middle) (NN adulthood)))) (. .)))