( ( At ( the surface ) ) ( , ( ( the Faraday ) ( ( ( cage ( of ( the ( inner core ) ) ) ) ( with ( the ( liquid ( outer core ) ) ) ) ) . ) ) ) )
(ROOT (S (PP (IN At) (NP (DT the) (NN surface))) (, ,) (NP (DT the) (NNP Faraday)) (VP (VBD cage) (PP (IN of) (NP (DT the) (JJ inner) (NN core))) (PP (IN with) (NP (DT the) (JJ liquid) (JJ outer) (NN core)))) (. .)))
At the surface, the Faraday cage of the inner core with the liquid outer core.
(ROOT (S (NP (DT The) (JJ outer) (NN core)) (VP (VBZ is) (VP (VBN made) (PP (IN of) (NP (JJ liquid) (NN metal))))) (. .)))