( Adrenalin ( ( ( is mainly ) ( released ( in ( stress situations ) ) ) ) ; ) )
(ROOT (S (NP (NNP Adrenalin)) (VP (VBZ is) (ADVP (RB mainly)) (VP (VBN released) (PP (IN in) (NP (NN stress) (NNS situations))))) (: ;)))
Adrenalin is mainly released in stress situations;
(ROOT (S (NP (NNP Adrenalin)) (VP (VBZ is) (NP (NP (DT the) (NN hormone)) (VP (VBN produced) (PP (IN in) (NP (JJ high-stress) (NNS situations)))))) (. .)))