( Photosynthesis ( ( produces ( oxygen ( when ( ( ( ( carbon dioxide ) and ) water ) ( ( are chemically ) ( ( converted ( into glucose ) ) ( with ( ( the help ) ( of sunlight ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Photosynthesis)) (VP (VBZ produces) (NP (NP (NN oxygen)) (SBAR (WHADVP (WRB when)) (S (NP (NP (NN carbon) (NN dioxide)) (CC and) (NP (NN water))) (VP (VBP are) (ADVP (RB chemically)) (VP (VBN converted) (PP (IN into) (NP (NN glucose))) (PP (IN with) (NP (NP (DT the) (NN help)) (PP (IN of) (NP (NN sunlight))))))))))) (. .)))
Photosynthesis produces oxygen when carbon dioxide and water are chemically converted into glucose with the help of sunlight.
(ROOT (S (NP (NNS Photosynthesis)) (VP (VBZ converts) (NP (NN carbon) (NN dioxide) (CC and) (NN water)) (PP (IN into) (NP (NN glucose)))) (. .)))