so he donates a lot not everything but a lot of the material then what he doesn't donate we just go out and buy
( so ( he ( ( ( donates ( a lot ) ) ( not ( everything ( but ( ( a lot ) ( of ( the material ) ) ) ) ) ) ) ( then ( what ( he ( ( does n't ) ( ( ( donate ( we ( just ( go out ) ) ) ) and ) buy ) ) ) ) ) ) ) )
(ROOT (SBAR (IN so) (S (NP (PRP he)) (VP (VBZ donates) (NP (DT a) (NN lot)) (PP (RB not) (NP (NP (NN everything)) (PP (CC but) (NP (NP (DT a) (NN lot)) (PP (IN of) (NP (DT the) (NN material))))))) (SBAR (ADVP (RB then)) (WHNP (WP what)) (S (NP (PRP he)) (VP (VBZ does) (RB n't) (VP (VP (VB donate) (S (NP (PRP we)) (ADVP (RB just)) (VP (VB go) (PRT (RP out))))) (CC and) (VP (VB buy))))))))))
He is the largest donor of materials.
( He ( ( is ( ( the ( largest donor ) ) ( of materials ) ) ) . ) )
(ROOT (S (NP (PRP He)) (VP (VBZ is) (NP (NP (DT the) (JJS largest) (NN donor)) (PP (IN of) (NP (NNS materials))))) (. .)))