( ( ( ( ( Lower-energy radiation ) , ) ( such ( as ( ( ( low-energy ( X rays ) ) or ) ( ultraviolet light ) ) ) ) ) , ) ( often ( ( is ( absorbed ( by ( removing ( electrons ( that ( ( are farther ) ( from ( the nucleus ) ) ) ) ) ) ) ) ) . ) ) )
(ROOT (S (NP (NP (JJ Lower-energy) (NN radiation)) (, ,) (PP (JJ such) (IN as) (NP (NP (JJ low-energy) (NNP X) (NNS rays)) (CC or) (NP (JJ ultraviolet) (NN light)))) (, ,)) (ADVP (RB often)) (VP (VBZ is) (VP (VBN absorbed) (PP (IN by) (S (VP (VBG removing) (NP (NP (NNS electrons)) (SBAR (WHNP (WDT that)) (S (VP (VBP are) (ADVP (RB farther)) (PP (IN from) (NP (DT the) (NN nucleus)))))))))))) (. .)))
Lower-energy radiation, such as low-energy X rays or ultraviolet light, often is absorbed by removing electrons that are farther from the nucleus.
(ROOT (S (NP (DT An) (NN electron)) (VP (VBZ moves) (PP (TO to) (NP (NP (DT a) (NN shell)) (ADVP (RB farther) (PP (IN from) (NP (DT the) (NN nucleus)))))) (SBAR (IN after) (S (NP (PRP it)) (VP (VBZ absorbs) (NP (NN energy)))))) (. .)))