GAO's Web site (www.gao.gov) contains abstracts and full-text files ofcurrent reports and testimony and an expanding archive of older products.
( ( ( ( GAO 's ) ( Web site ) ) ( -LRB- ( www.gao.gov -RRB- ) ) ) ( ( contains ( ( ( abstracts and ) full-text ) ( files ( ( ( ( ( ofcurrent reports ) and ) testimony ) and ) ( ( an ( expanding archive ) ) ( of ( older products ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NP (NNP GAO) (POS 's)) (NNP Web) (NN site)) (PRN (-LRB- -LRB-) (NP (NNP www.gao.gov)) (-RRB- -RRB-))) (VP (VBZ contains) (SBAR (S (NP (NNS abstracts) (CC and) (NN full-text)) (VP (VBZ files) (NP (NP (NP (JJ ofcurrent) (NNS reports)) (CC and) (NP (NN testimony))) (CC and) (NP (NP (DT an) (VBG expanding) (NN archive)) (PP (IN of) (NP (JJR older) (NNS products))))))))) (. .)))
The GAO has received many complaints due to lack of a website. 
( ( The GAO ) ( ( has ( received ( ( many complaints ) ( due ( to ( lack ( of ( a website ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NNP GAO)) (VP (VBZ has) (VP (VBN received) (S (NP (JJ many) (NNS complaints)) (ADJP (JJ due) (PP (TO to) (NP (NP (NN lack)) (PP (IN of) (NP (DT a) (NN website))))))))) (. .)))