( are ( ( ectothermic ( -LRB- ( ( they ( ( rely ( on ( external sources ) ) ) ( to ( control ( their ( body temperature ) ) ) ) ) ) -RRB- ) ) ) ; ) )
(ROOT (S (NP (VBP are)) (VP (VP (VBZ ectothermic)) (PRN (-LRB- -LRB-) (S (NP (PRP they)) (VP (VBP rely) (PP (IN on) (NP (JJ external) (NNS sources))) (S (VP (TO to) (VP (VB control) (NP (PRP$ their) (NN body) (NN temperature))))))) (-RRB- -RRB-))) (: ;)))
are ectothermic (they rely on external sources to control their body temperature);
(ROOT (S (NP (NNP Ectothermic)) (VP (VBZ is) (NP (NP (DT the) (NN term)) (PP (IN for) (NP (NP (NNS animals)) (SBAR (WHNP (WDT that)) (S (VP (MD can) (RB not) (VP (VB raise) (NP (PRP$ their) (NN body) (NN temperature)) (PP (IN on) (NP (PRP$ their) (JJ own))))))))))) (. .)))