( ( This energy ) ( ( may ( be ( ( released ( in ( ( the form ) ( of ( a ( luminescence signal ) ) ) ) ) ) ( by ( ( ( exposure ( to ( sufficient ( ( heat or ) light ) ) ) ) , ) ( which ( ( in effect ) ( act ( as ( zeroing mechanisms ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (DT This) (NN energy)) (VP (MD may) (VP (VB be) (VP (VBN released) (PP (IN in) (NP (NP (DT the) (NN form)) (PP (IN of) (NP (DT a) (JJ luminescence) (NN signal))))) (PP (IN by) (NP (NP (NN exposure)) (PP (TO to) (NP (JJ sufficient) (NN heat) (CC or) (NN light))) (, ,) (SBAR (WHNP (WDT which)) (S (PP (IN in) (NP (NN effect))) (VP (VBP act) (PP (IN as) (S (VP (VBG zeroing) (NP (NNS mechanisms))))))))))))) (. .)))
This energy may be released in the form of a luminescence signal by exposure to sufficient heat or light, which in effect act as zeroing mechanisms.
(ROOT (S (NP (NP (NNP Producing) (NN light)) (PP (IN without) (NP (NN heat)))) (VP (VBZ is) (VP (VBN called) (S (ADJP (JJ luminescence))))) (. .)))