( Yeast ( ( is ( ( a ( single ( cell organism ) ) ) ( that ( ( ( eats sugar ) and ) ( produces ( ( ( ( carbon ( dioxide gas ) ) ( -LRB- ( CO2 -RRB- ) ) ) and ) alcohol ) ) ) ) ) ) . ) )
(ROOT (S (NP (NN Yeast)) (VP (VBZ is) (NP (NP (DT a) (JJ single) (NN cell) (NN organism)) (SBAR (WHNP (WDT that)) (S (VP (VP (VBZ eats) (NP (NN sugar))) (CC and) (VP (VBZ produces) (NP (NP (NN carbon) (NN dioxide) (NN gas)) (PRN (-LRB- -LRB-) (NP (NNP CO2)) (-RRB- -RRB-)) (CC and) (NP (NN alcohol))))))))) (. .)))
Yeast is a single cell organism that eats sugar and produces carbon dioxide gas (CO2) and alcohol.
(ROOT (S (NP (NNP Single-celled)) (VP (VBP are) (ADJP (JJ yeasts))) (. .)))