Case Studies in Science Education.
( ( ( Case Studies ) ( in ( Science Education ) ) ) . )
(ROOT (NP (NP (NNP Case) (NNPS Studies)) (PP (IN in) (NP (NNP Science) (NNP Education))) (. .)))
The case studies were done by independent organizations.
( ( The ( case studies ) ) ( ( were ( done ( by ( independent organizations ) ) ) ) . ) )
(ROOT (S (NP (DT The) (NN case) (NNS studies)) (VP (VBD were) (VP (VBN done) (PP (IN by) (NP (JJ independent) (NNS organizations))))) (. .)))