( Autotrophs ( ( ( use ( ( ( ( the energy ) ( of ( ( either light ) ( -LRB- ( photoautotrophs -RRB- ) ) ) ) ) or ) ( ( -LRB- ( oxidation -RRB- ) ) ( of ( ( inorganic compounds ) ( -LRB- ( chemoautotrophs -RRB- ) ) ) ) ) ) ) ( to ( ( convert ( ( inorganic compounds ) ( -LRB- ( ( ( ( carbon dioxide ) and ) water ) -RRB- ) ) ) ) ( to ( ( organic compounds ) ( -LRB- ( glucose -RRB- ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Autotrophs)) (VP (VBP use) (NP (NP (NP (DT the) (NN energy)) (PP (IN of) (NP (NP (DT either) (NN light)) (PRN (-LRB- -LRB-) (NP (NNS photoautotrophs)) (-RRB- -RRB-))))) (CC or) (NP (NP (-LRB- -LRB-) (NN oxidation) (-RRB- -RRB-)) (PP (IN of) (NP (NP (JJ inorganic) (NNS compounds)) (PRN (-LRB- -LRB-) (NP (NNS chemoautotrophs)) (-RRB- -RRB-)))))) (S (VP (TO to) (VP (VB convert) (NP (NP (JJ inorganic) (NNS compounds)) (PRN (-LRB- -LRB-) (NP (NP (NN carbon) (NN dioxide)) (CC and) (NP (NN water))) (-RRB- -RRB-))) (PP (TO to) (NP (NP (JJ organic) (NNS compounds)) (PRN (-LRB- -LRB-) (NP (NN glucose)) (-RRB- -RRB-)))))))) (. .)))
Autotrophs use the energy of either light (photoautotrophs) or (oxidation) of inorganic compounds (chemoautotrophs) to convert inorganic compounds (carbon dioxide and water) to organic compounds (glucose).
(ROOT (S (NP (NNS Photoautotrophs) (CC and) (NNS chemoautotrophs)) (VP (VBP are) (NP (NP (CD two) (JJ basic) (NNS types)) (PP (IN of) (NP (NNS autotrophs))))) (. .)))