( ( ( The island ) ( of Iceland ) ) ( ( ( ( ( formed ( in ( this way ) ) ) , ) and ) ( sits ( right ( on ( ( ( top ( of ( the ( Mid-Atlantic ridge ) ) ) ) , ) ( which ( is ( ( a ( big ( mid-ocean ridge ) ) ) ( in ( the ( Atlantic ocean ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT The) (NN island)) (PP (IN of) (NP (NNP Iceland)))) (VP (VP (VBD formed) (PP (IN in) (NP (DT this) (NN way)))) (, ,) (CC and) (VP (VBZ sits) (ADVP (RB right) (PP (IN on) (NP (NP (NN top)) (PP (IN of) (NP (DT the) (NNP Mid-Atlantic) (NN ridge))) (, ,) (SBAR (WHNP (WDT which)) (S (VP (VBZ is) (NP (NP (DT a) (JJ big) (JJ mid-ocean) (NN ridge)) (PP (IN in) (NP (DT the) (NNP Atlantic) (NN ocean)))))))))))) (. .)))
The island of Iceland formed in this way, and sits right on top of the Mid-Atlantic ridge, which is a big mid-ocean ridge in the Atlantic ocean.
(ROOT (S (NP (NNP Iceland)) (VP (VBZ sits) (PP (IN on) (NP (DT the) (JJ mid-atlantic) (NN ridge)))) (. .)))