( Plants ( ( ( produce glucose ) ( through ( ( a process ) ( known ( as photosynthesis ) ) ) ) ) . ) )
(ROOT (S (NP (NNS Plants)) (VP (VBP produce) (NP (NN glucose)) (PP (IN through) (NP (NP (DT a) (NN process)) (VP (VBN known) (PP (IN as) (NP (NN photosynthesis))))))) (. .)))
Plants produce glucose through a process known as photosynthesis.
(ROOT (S (NP (NNP Glucose)) (VP (VBZ is) (NP (NP (DT a) (NN carbohydrate)) (SBAR (WHNP (WDT that)) (S (VP (VBZ is) (VP (VBN produced) (PP (IN by) (NP (NN photosynthesis))))))))) (. .)))