( ( Chloroplasts ( in ( plant cells ) ) ) ( ( perform photosynthesis ) ; ) )
(ROOT (S (NP (NP (NNS Chloroplasts)) (PP (IN in) (NP (NN plant) (NNS cells)))) (VP (VBP perform) (NP (NN photosynthesis))) (: ;)))
Chloroplasts in plant cells perform photosynthesis;
(ROOT (S (NP (NNS Photosynthesis)) (VP (VBZ occurs) (PP (IN in) (NP (DT the) (NN chloroplast)))) (. .)))
Photosynthesis occurs in the chloroplast.