( ( If ( you ( have ( ( a person ) ( with ( manic depression ) ) ) ) ) ) ( , ( lithium ( ( ( ( takes ( ( ( three or ) four ) weeks ) ) , ) ( although ( they ( 've ( ( got ( high levels ) ) ( at ( the beginning ) ) ) ) ) ) ) . ) ) ) )
(ROOT (S (SBAR (IN If) (S (NP (PRP you)) (VP (VBP have) (NP (NP (DT a) (NN person)) (PP (IN with) (NP (JJ manic) (NN depression))))))) (, ,) (NP (NN lithium)) (VP (VBZ takes) (NP (QP (CD three) (CC or) (CD four)) (NNS weeks)) (, ,) (SBAR (IN although) (S (NP (PRP they)) (VP (VBP 've) (VP (VBN got) (NP (JJ high) (NNS levels)) (PP (IN at) (NP (DT the) (NN beginning)))))))) (. .)))
If you have a person with manic depression, lithium takes three or four weeks, although they've got high levels at the beginning.
(ROOT (S (NP (NNP Lithium)) (VP (VBZ has) (NP (CD three) (NNS electrons))) (. .)))