( ( ( A chain ) ( of volcanoes ) ) ( ( ( pushed ( through ( the ( continental ( crust parallel ) ) ) ) ) ( to ( ( ( the ( deep trench ) ) , ) ( fed ( by ( magma ( ( rising ( from ( the ( subducting ( oceanic plate ) ) ) ) ) ( as ( it ( entered ( ( Earth 's ) ( hot interior ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (NP (DT A) (NN chain)) (PP (IN of) (NP (NNS volcanoes)))) (VP (VBD pushed) (PP (IN through) (NP (DT the) (JJ continental) (NN crust) (NN parallel))) (PP (TO to) (NP (NP (DT the) (JJ deep) (NN trench)) (, ,) (VP (VBN fed) (PP (IN by) (NP (NP (NN magma)) (VP (VBG rising) (PP (IN from) (NP (DT the) (JJ subducting) (JJ oceanic) (NN plate))) (SBAR (IN as) (S (NP (PRP it)) (VP (VBD entered) (NP (NP (NNP Earth) (POS 's)) (JJ hot) (NN interior)))))))))))) (. .)))
A chain of volcanoes pushed through the continental crust parallel to the deep trench, fed by magma rising from the subducting oceanic plate as it entered Earth's hot interior.
(ROOT (S (NP (DT A) (NN volcano) (NN chain)) (VP (VBZ is) (VP (VBN formed) (PP (IN by) (NP (NP (NN subduction)) (PP (IN of) (NP (JJ oceanic) (NN crust))))) (PP (IN beneath) (NP (DT a) (ADJP (JJ continental) (CC or) (JJ oceanic)) (NN plate))))) (. .)))