( ( ( AIDS ( -LRB- ( ( acquired ( immunodeficiency syndrome ) ) -RRB- ) ) ) ( ( The ( ( usually fatal ) ( human disease ) ) ) ( ( in which ) ( ( the ( immune system ) ) ( is ( destroyed ( by ( ( a retrovirus ) ( -LRB- ( ( ( ( Human ( Immunodeficiency Virus ) ) , ) HIV ) -RRB- ) ) ) ) ) ) ) ) ) ) . )
(ROOT (NP (NP (NP (NNP AIDS)) (PRN (-LRB- -LRB-) (VP (VBN acquired) (NP (JJ immunodeficiency) (NN syndrome))) (-RRB- -RRB-))) (NP (NP (DT The) (ADJP (RB usually) (JJ fatal)) (JJ human) (NN disease)) (SBAR (WHPP (IN in) (WHNP (WDT which))) (S (NP (DT the) (JJ immune) (NN system)) (VP (VBZ is) (VP (VBN destroyed) (PP (IN by) (NP (NP (DT a) (NNS retrovirus)) (PRN (-LRB- -LRB-) (NP (NNP Human) (NNP Immunodeficiency) (NNP Virus)) (, ,) (NP (NNP HIV)) (-RRB- -RRB-))))))))) (. .)))
AIDS (acquired immunodeficiency syndrome) The usually fatal human disease in which the immune system is destroyed by a retrovirus (Human Immunodeficiency Virus, HIV).
(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)))))))))))) (. .)))