( ( for example ) ( , ( ( by ( ( stimulating ( immune ( system cells ) ) ) ( ( ( to ( attack ( cancer cells ) ) ) or ) ( by ( ( introducing resistance ) ( to ( ( human ( immunodeficiency virus ) ) ( -LRB- ( HIV -RRB- ) ) ) ) ) ) ) ) ) ( , ( ( ( the virus ) ( that causes ) ) ( ( acquired ( ( immunodeficiency syndrome ) ( -LRB- ( AIDS -RRB- ) ) ) ) . ) ) ) ) ) )
(ROOT (S (PP (IN for) (NP (NN example))) (, ,) (PP (IN by) (S (VP (VBG stimulating) (NP (JJ immune) (NN system) (NNS cells)) (PP (PP (TO to) (NP (NN attack) (NN cancer) (NNS cells))) (CC or) (PP (IN by) (S (VP (VBG introducing) (NP (NN resistance)) (PP (TO to) (NP (NP (JJ human) (NN immunodeficiency) (NN virus)) (PRN (-LRB- -LRB-) (NP (NNP HIV)) (-RRB- -RRB-))))))))))) (, ,) (NP (NP (DT the) (NN virus)) (SBAR (WHNP (WDT that)) (S (VP (VBZ causes))))) (VP (VBD acquired) (NP (NP (JJ immunodeficiency) (NN syndrome)) (PRN (-LRB- -LRB-) (NP (NNP AIDS)) (-RRB- -RRB-)))) (. .)))
for example, by stimulating immune system cells to attack cancer cells or by introducing resistance to human immunodeficiency virus ( HIV ), the virus that causes acquired immunodeficiency syndrome ( AIDS ).
(ROOT (S (NP (DT The) (NN term)) (ADVP (RB immunodeficiency)) (VP (VBZ means) (NP (NP (DT a) (NN failure) (, ,) (NN insufficiency) (, ,) (CC or) (NN delay)) (PP (IN in) (NP (NP (DT the) (NN response)) (PP (IN of) (NP (NP (DT the) (JJ immune) (NN system)) (, ,) (SBAR (WHNP (WDT which)) (S (VP (MD may) (VP (VB be) (VP (VBN acquired) (CC or) (VBN inherited)))))))))))) (. .)))