( however ( , ( ( all organizations ) ( ( require ( ( a ( minimum commitment ) ) ( of ( ( ( 6 to ) 8 ) weeks ) ) ) ) . ) ) ) )
(ROOT (S (ADVP (RB however)) (, ,) (NP (DT all) (NNS organizations)) (VP (VBP require) (NP (NP (DT a) (JJ minimum) (NN commitment)) (PP (IN of) (NP (QP (CD 6) (TO to) (CD 8)) (NNS weeks))))) (. .)))
however, all organizations require a minimum commitment of 6 to 8 weeks.
(ROOT (S (PP (IN By) (NP (CD 8) (NNS weeks))) (, ,) (NP (DT all) (JJ major) (NNS organs)) (VP (VBP start) (S (VP (VBG developing)))) (. .)))