( ( humans , ) ( -LRB- ( Homo ( sapiens -RRB- ) ) ) )
(ROOT (NP (NP (NNS humans)) (, ,) (NP (-LRB- -LRB-) (NNP Homo) (NNP sapiens) (-RRB- -RRB-))))
humans, ( Homo sapiens )
(ROOT (S (NP (NNS Humans)) (VP (VBP belong) (PP (TO to) (NP (DT the) (NN species) (NN homo) (NN sapiens)))) (. .)))