( ( ( By ( the time ) ) ( we ( reach ( ( ( ( ( middle adulthood ) ( -LRB- ( ( 30 ( to ( 45 years ) ) ) -RRB- ) ) ) , ) or ) ( ( the ( `` ( half ( time '' ) ) ) ) ( of ( our life ) ) ) ) ) ) ) ( , ( we ( ( are independent ) ; ) ) ) )
(ROOT (S (S (PP (IN By) (NP (DT the) (NN time))) (NP (PRP we)) (VP (VBP reach) (NP (NP (NP (JJ middle) (NN adulthood)) (PRN (-LRB- -LRB-) (NP (QP (CD 30) (TO to) (CD 45) (NNS years))) (-RRB- -RRB-))) (, ,) (CC or) (NP (NP (DT the) (`` ``) (NN half) (NN time) ('' '')) (PP (IN of) (NP (PRP$ our) (NN life))))))) (, ,) (NP (PRP we)) (VP (VBP are) (ADJP (JJ independent))) (: ;)))
By the time we reach middle adulthood (30 to 45 years), or the &quot;half time&quot; of our life, we are independent;
(ROOT (S (NP (NNP Menopause)) (VP (VBZ occurs) (PRT (RP in)) (PP (IN in) (NP (JJ middle) (NN adulthood)))) (. .)))