The search for an AIDS vaccine currently needs serious help, with the U.S. government, the biggest investor in the effort, spending less than 10 percent of its AIDS-research budget on the problem.
( ( ( The search ) ( for ( an ( AIDS vaccine ) ) ) ) ( currently ( ( ( ( needs ( serious help ) ) , ) ( with ( ( ( ( ( the ( U.S. government ) ) , ) ( ( the ( biggest investor ) ) ( in ( the effort ) ) ) ) , ) ( ( spending ( ( ( less ( than 10 ) ) percent ) ( of ( its ( AIDS-research budget ) ) ) ) ) ( on ( the problem ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NP (DT The) (NN search)) (PP (IN for) (NP (DT an) (NNP AIDS) (NN vaccine)))) (ADVP (RB currently)) (VP (VBZ needs) (NP (JJ serious) (NN help)) (, ,) (PP (IN with) (S (NP (NP (DT the) (NNP U.S.) (NN government)) (, ,) (NP (NP (DT the) (JJS biggest) (NN investor)) (PP (IN in) (NP (DT the) (NN effort)))) (, ,)) (VP (VBG spending) (NP (NP (QP (JJR less) (IN than) (CD 10)) (NN percent)) (PP (IN of) (NP (PRP$ its) (JJ AIDS-research) (NN budget)))) (PP (IN on) (NP (DT the) (NN problem))))))) (. .)))
There has been no past or present search for an AIDS vaccine.
( There ( ( has ( been ( ( no ( ( ( past or ) present ) search ) ) ( for ( an ( AIDS vaccine ) ) ) ) ) ) . ) )
(ROOT (S (NP (EX There)) (VP (VBZ has) (VP (VBN been) (NP (NP (DT no) (ADJP (NN past) (CC or) (NN present)) (NN search)) (PP (IN for) (NP (DT an) (NNP AIDS) (NN vaccine)))))) (. .)))