Last year, you gave us a contribution of $xx, for which we, and the people you helped, are grateful.
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(ROOT (S (NP (JJ Last) (NN year)) (, ,) (NP (PRP you)) (VP (VBD gave) (NP (PRP us)) (NP (NP (DT a) (NN contribution)) (PP (IN of) (NP (NP ($ $) (CD xx)) (, ,) (SBAR (WHPP (IN for) (WHNP (WDT which))) (S (NP (NP (PRP we)) (, ,) (CC and) (NP (NP (DT the) (NNS people)) (SBAR (S (NP (PRP you)) (VP (VBD helped))))) (, ,)) (VP (VBP are) (ADJP (JJ grateful))))))))) (. .)))
The large contribution you gave us last year allowed us to give help to many people and they were pretty happy about that.
( ( ( ( ( ( The ( large contribution ) ) ( you ( ( gave us ) ( last year ) ) ) ) ( allowed ( us ( to ( ( give help ) ( to ( many people ) ) ) ) ) ) ) and ) ( they ( ( were ( pretty happy ) ) ( about that ) ) ) ) . )
(ROOT (S (S (NP (NP (DT The) (JJ large) (NN contribution)) (SBAR (S (NP (PRP you)) (VP (VBD gave) (NP (PRP us)) (NP (JJ last) (NN year)))))) (VP (VBD allowed) (S (NP (PRP us)) (VP (TO to) (VP (VB give) (NP (NN help)) (PP (TO to) (NP (JJ many) (NNS people)))))))) (CC and) (S (NP (PRP they)) (VP (VBD were) (ADJP (RB pretty) (JJ happy)) (PP (IN about) (NP (DT that))))) (. .)))