( ( All continents ) ( except Antarctica ) )
(ROOT (NP (NP (DT All) (NN continents)) (PP (IN except) (NP (NNP Antarctica)))))
All continents except Antarctica
(ROOT (S (NP (NNP Antarctica)) (VP (VBZ is) (NP (NP (DT the) (JJ only) (NN continent)) (PP (IN without) (NP (NNS amphibians))))) (. .)))