( ( ( ( ( -LRB- ( ( ( ( CO 3 ) & ) 4 ) -RRB- ) ) ( Homo sapiens ) ) - ) ( ( the species ) ( ( to which ) ( ( all ( living ( human beings ) ) ) ( belong to ) ) ) ) ) . )
(ROOT (NP (NP (PRN (-LRB- -LRB-) (NP (NP (NNP CO) (CD 3)) (CC &) (NP (CD 4))) (-RRB- -RRB-)) (NNP Homo) (NNP sapiens)) (: -) (NP (NP (DT the) (NN species)) (SBAR (WHPP (TO to) (WHNP (WDT which))) (S (NP (DT all) (VBG living) (JJ human) (NNS beings)) (VP (VBP belong) (PP (TO to)))))) (. .)))
(CO 3&amp;4) Homo sapiens - the species to which all living human beings belong to.
(ROOT (S (NP (NNS Humans)) (VP (VBP belong) (PP (TO to) (NP (DT the) (NN species) (NN homo) (NN sapiens)))) (. .)))