Last year, you gave us a contribution of $xx, for which we, and the people you helped, are grateful.
( ( Last year ) ( , ( you ( ( ( gave us ) ( ( a contribution ) ( of ( ( ( $ xx ) , ) ( ( for which ) ( ( ( ( ( we , ) and ) ( ( the people ) ( you helped ) ) ) , ) ( are grateful ) ) ) ) ) ) ) . ) ) ) )
(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))))))))) (. .)))
Donating money last year made us and some people who needed help happy.
( ( Donating money ) ( ( last year ) ( ( made ( ( us and ) ( ( some people ) ( who ( needed ( help happy ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (VBG Donating) (NN money)) (NP (JJ last) (NN year)) (VP (VBD made) (NP (NP (PRP us)) (CC and) (NP (NP (DT some) (NNS people)) (SBAR (WHNP (WP who)) (S (VP (VBD needed) (S (VP (VB help) (ADJP (JJ happy)))))))))) (. .)))