( ( ( Light-dependent reactions ) ( of photosynthesis ) ) ( ( occur ( in ( ( the ( thylakoid membranes ) ) ( of chloroplasts ) ) ) ) . ) )
(ROOT (S (NP (NP (JJ Light-dependent) (NNS reactions)) (PP (IN of) (NP (NN photosynthesis)))) (VP (VBP occur) (PP (IN in) (NP (NP (DT the) (JJ thylakoid) (NNS membranes)) (PP (IN of) (NP (NNS chloroplasts)))))) (. .)))
Light-dependent reactions of photosynthesis occur in the thylakoid membranes of chloroplasts.
(ROOT (S (NP (DT The) (JJ light) (NNS reactions)) (VP (VBP take) (NP (NP (NN place)) (PP (IN in) (NP (DT the) (NN thylakoid))))) (. .)))