( ( SUMMARY Photosynthesis ) ( ( is ( ( the process ) ( ( by which ) ( plants ( make ( ( glucose ( , ( oxygen ( and ( carbon dioxide ) ) ) ) ) ( which ( ( all people ) ( need ( to survive ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NNP SUMMARY) (NNP Photosynthesis)) (VP (VBZ is) (NP (NP (DT the) (NN process)) (SBAR (WHPP (IN by) (WHNP (WDT which))) (S (NP (NNS plants)) (VP (VBP make) (NP (NP (NN glucose) (, ,) (NN oxygen) (CC and) (NN carbon) (NN dioxide)) (SBAR (WHNP (WDT which)) (S (NP (DT all) (NNS people)) (VP (VBP need) (S (VP (TO to) (VP (VB survive))))))))))))) (. .)))
SUMMARY Photosynthesis is the process by which plants make glucose, oxygen and carbon dioxide which all people need to survive.
(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))))) (. .)))