For the same time period, our alumni participation in similar firms was 31 percent to 67 percent.
( ( For ( the ( same ( time period ) ) ) ) ( , ( ( ( our ( alumni participation ) ) ( in ( similar firms ) ) ) ( ( was ( ( 31 percent ) ( to ( 67 percent ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN For) (NP (DT the) (JJ same) (NN time) (NN period))) (, ,) (NP (NP (PRP$ our) (NNS alumni) (NN participation)) (PP (IN in) (NP (JJ similar) (NNS firms)))) (VP (VBD was) (NP (NP (CD 31) (NN percent)) (PP (TO to) (NP (CD 67) (NN percent))))) (. .)))
The alumni didn't enjoy participating, they just did it for the credits.
( ( ( The alumni ) ( ( did n't ) ( enjoy participating ) ) ) ( , ( they ( just ( ( ( did it ) ( for ( the credits ) ) ) . ) ) ) ) )
(ROOT (S (S (NP (DT The) (NNS alumni)) (VP (VBD did) (RB n't) (VP (VB enjoy) (S (VP (VBG participating)))))) (, ,) (NP (PRP they)) (ADVP (RB just)) (VP (VBD did) (NP (PRP it)) (PP (IN for) (NP (DT the) (NNS credits)))) (. .)))