( ( ( ( ( Photosynthesis ( ( uses ( carbon ( ( dioxide and ) water ) ) ) ( to ( ( produce sugars ) ( from ( which ( ( other ( organic compounds ) ) ( can ( be constructed ) ) ) ) ) ) ) ) ) , ) and ) ( oxygen ( is ( produced ( as ( a by-product ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNS Photosynthesis)) (VP (VBZ uses) (NP (NN carbon) (NN dioxide) (CC and) (NN water)) (S (VP (TO to) (VP (VB produce) (NP (NNS sugars)) (PP (IN from) (SBAR (WHNP (WDT which)) (S (NP (JJ other) (JJ organic) (NNS compounds)) (VP (MD can) (VP (VB be) (VP (VBN constructed)))))))))))) (, ,) (CC and) (S (NP (NN oxygen)) (VP (VBZ is) (VP (VBN produced) (PP (IN as) (NP (DT a) (NN by-product)))))) (. .)))
Photosynthesis uses carbon dioxide and water to produce sugars from which other organic compounds can be constructed, and oxygen is produced as a by-product.
(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.