( Photosynthesis ( ( ( ( involves ( ( the reduction ) ( of ( carbon dioxide ) ) ) ) ( into ( ( sugars and ) ( ( the oxidation ) ( of water ) ) ) ) ) ( into ( molecular oxygen ) ) ) . ) )
(ROOT (S (NP (NNS Photosynthesis)) (VP (VBZ involves) (NP (NP (DT the) (NN reduction)) (PP (IN of) (NP (NN carbon) (NN dioxide)))) (PP (IN into) (NP (NP (NNS sugars)) (CC and) (NP (NP (DT the) (NN oxidation)) (PP (IN of) (NP (NN water)))))) (PP (IN into) (NP (JJ molecular) (NN oxygen)))) (. .)))
Photosynthesis involves the reduction of carbon dioxide into sugars and the oxidation of water into molecular oxygen.
(ROOT (S (S (NP (NNS Photosynthesis)) (VP (VBZ is) (VP (VBN described) (PP (IN by) (NP (DT this) (NN statement)))))) (: :) (S (NP (NP (NN carbon) (NN dioxide)) (CC and) (NP (NN water))) (VP (VBP are) (VP (VBN turned) (PP (IN into) (NP (NN sugar) (CC and) (NN oxygen)))))) (. .)))
Photosynthesis is described by this statement: carbon dioxide and water are turned into sugar and oxygen.