( ( ( ( Frogs ( are amphibians ) ) and ) ( this ( means ( they ( can ( live ( ( ( on land ) and ) ( in ( the water ) ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNS Frogs)) (VP (VBP are) (ADJP (JJ amphibians)))) (CC and) (S (NP (DT this)) (VP (VBZ means) (SBAR (S (NP (PRP they)) (VP (MD can) (VP (VB live) (PP (PP (IN on) (NP (NN land))) (CC and) (PP (IN in) (NP (DT the) (NN water)))))))))) (. .)))
Frogs are amphibians and this means they can live on land and in the water.
(ROOT (S (NP (NNS Frogs)) (VP (VBP are) (VP (VBG amphibians) (NP (NP (DT that) (JJ live) (NN part)) (PP (IN of) (NP (NP (NP (DT the) (NN time)) (PP (IN in) (NP (JJ fresh) (NN water)))) (CC and) (NP (NP (JJ live) (NN rest)) (PP (IN of) (NP (NP (DT the) (NN time)) (PP (IN on) (NP (NN land))))))))))) (. .)))