( ( ( ( Autotrophs , ) ( such ( as ( ( trees and ) ( other ( green plants ) ) ) ) ) ) , ) ( ( ( use photosynthesis ) ( to ( ( ( ( convert ( carbon dioxide ) ) ( during ( primary production ) ) ) , ) ( ( releasing oxygen ) ( in ( the process ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (NNS Autotrophs)) (, ,) (PP (JJ such) (IN as) (NP (NP (NNS trees)) (CC and) (NP (JJ other) (JJ green) (NNS plants)))) (, ,)) (VP (VBP use) (NP (NN photosynthesis)) (S (VP (TO to) (VP (VB convert) (NP (NN carbon) (NN dioxide)) (PP (IN during) (NP (JJ primary) (NN production))) (, ,) (S (VP (VBG releasing) (NP (NN oxygen)) (PP (IN in) (NP (DT the) (NN process))))))))) (. .)))
Autotrophs, such as trees and other green plants, use photosynthesis to convert carbon dioxide during primary production, releasing oxygen in the process.
(ROOT (S (NP (NNP Oxygen)) (VP (VBZ is) (VP (VBN made) (PP (IN by) (NP (NP (NNS trees)) (CC and) (NP (JJ other) (NNS plants)))) (PP (IN during) (NP (NN photosynthesis))))) (. .)))