( ( In ( a ( Nature paper ) ) ) ( , ( ( ( ( ( two scientists ) present ) evidence ) ( that ( water ( may ( be ( transported ( into ( ( planet interiors ) ( in ( ( the form ) ( of ( a ( high-pressure ice ) ) ) ) ) ) ) ) ) ) ) ) ) ( ( ( ( called '' ) ( ice VII ) ) '' ) . ) ) ) )
(ROOT (S (PP (IN In) (NP (DT a) (NNP Nature) (NN paper))) (, ,) (NP (NP (ADJP (NP (CD two) (NNS scientists)) (JJ present)) (NN evidence)) (SBAR (IN that) (S (NP (NN water)) (VP (MD may) (VP (VB be) (VP (VBN transported) (PP (IN into) (NP (NP (NN planet) (NNS interiors)) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (DT a) (JJ high-pressure) (NN ice))))))))))))) (VP (VBD called) ('' '') (NP (NN ice) (NNS VII)) ('' '')) (. .)))
In a Nature paper, two scientists present evidence that water may be transported into planet interiors in the form of a high-pressure ice called &quot; ice VII &quot;.
(ROOT (S (NP (NNP Water)) (VP (VBZ takes) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (NN ice)))) (PP (IN on) (NP (NN planet) (NNS mars)))) (. .)))