( ( ( ( Amphibians ( include ( ( frogs and ) salamanders ) ) ) and ) ( they ( ( spend ( their lives ) ) ( living ( both ( ( ( on land ) and ) ( in ( the water ) ) ) ) ) ) ) ) . )
(ROOT (S (S (NP (NNS Amphibians)) (VP (VBP include) (NP (NNS frogs) (CC and) (NNS salamanders)))) (CC and) (S (NP (PRP they)) (VP (VBP spend) (NP (PRP$ their) (NNS lives)) (S (VP (VBG living) (PP (DT both) (PP (IN on) (NP (NN land))) (CC and) (PP (IN in) (NP (DT the) (NN water)))))))) (. .)))
Amphibians include frogs and salamanders and they spend their lives living both 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))))))))))) (. .)))