( ( ( Ocean-ridge discontinuities ) ( in Iceland ) ) . )
(ROOT (NP (NP (JJ Ocean-ridge) (NNS discontinuities)) (PP (IN in) (NP (NNP Iceland))) (. .)))
Ocean-ridge discontinuities in Iceland.
(ROOT (S (NP (NNP Iceland)) (VP (VBZ sits) (PP (IN on) (NP (DT the) (JJ mid-atlantic) (NN ridge)))) (. .)))