( ( ( ( ( ( The ( raw materials ) ) ( of photosynthesis ) ) , ) ( water ( and ( carbon dioxide ) ) ) ) , ) ( ( enter ( ( ( ( ( ( ( the cells ) ( of ( the leaf ) ) ) , ) and ) ( ( the products ) ( of ( photosynthesis ( , ( ( sugar and ) oxygen ) ) ) ) ) ) , ) ( leave ( the leaf ) ) ) ) . ) )
(ROOT (S (NP (NP (NP (DT The) (JJ raw) (NNS materials)) (PP (IN of) (NP (NN photosynthesis)))) (, ,) (NP (NN water) (CC and) (NN carbon) (NN dioxide)) (, ,)) (VP (VBP enter) (SBAR (S (NP (NP (NP (DT the) (NNS cells)) (PP (IN of) (NP (DT the) (NN leaf)))) (, ,) (CC and) (NP (NP (DT the) (NNS products)) (PP (IN of) (NP (NN photosynthesis) (, ,) (NN sugar) (CC and) (NN oxygen)))) (, ,)) (VP (VBP leave) (NP (DT the) (NN leaf)))))) (. .)))
The raw materials of photosynthesis, water and carbon dioxide, enter the cells of the leaf, and the products of photosynthesis, sugar and oxygen, leave the leaf.
(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.