( I ( ( worked ( on ( nuclear ( , ( fossil ( fuel ( , ( solar ( and ( wind ( project designs ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP I)) (VP (VBD worked) (PP (IN on) (NP (JJ nuclear) (, ,) (JJ fossil) (NN fuel) (, ,) (NN solar) (CC and) (NN wind) (NN project) (NNS designs)))) (. .)))
I worked on nuclear, fossil fuel, solar and wind project designs.
(ROOT (S (NP (NP (NNP Solar)) (CC and) (NP (NN wind))) (VP (VBP are) (ADVP (RB still)) (ADJP (JJ expensive)) (PP (VBN compared) (PP (TO to) (NP (JJ fossil) (NNS fuels))))) (. .)))