( ( Once ( ( a charged ) ( object ( touches ( the earth ) ) ) ) ) ( , ( it ( immediately ( ( ( ( ( ( loses ( its charges ) ) , ) Again ) , ) ( once ( this ( happens ( ( the object ) ( is ( said ( to ( be ( ( ( grounded ( because ( electrons ( either flow ) ) ) ) ( from ( the ( charged object ) ) ) ) ( into ( the ( ground ( or ( vice versa ) ) ) ) ) ) ) ) ) ) ) ) ) ) ) . ) ) ) ) )
(ROOT (S (SBAR (IN Once) (S (NP (DT a) (NN charged)) (VP (VBP object) (S (NP (NNS touches)) (NP (DT the) (NN earth)))))) (, ,) (NP (PRP it)) (ADVP (RB immediately)) (VP (VBZ loses) (NP (PRP$ its) (NNS charges)) (, ,) (ADVP (RB Again)) (, ,) (SBAR (IN once) (S (NP (DT this)) (VP (VBZ happens) (SBAR (S (NP (DT the) (NN object)) (VP (VBZ is) (VP (VBN said) (S (VP (TO to) (VP (VB be) (VP (VBN grounded) (PP (IN because) (NP (NP (NNS electrons)) (PP (CC either) (NP (NN flow))))) (PP (IN from) (NP (DT the) (JJ charged) (NN object))) (PP (IN into) (NP (DT the) (NN ground) (CC or) (NN vice) (NN versa))))))))))))))) (. .)))
Once a charged object touches the earth, it immediately loses its charges, Again, once this happens the object is said to be grounded because electrons either flow from the charged object into the ground or vice versa.
(ROOT (S (NP (NNP Grounding)) (VP (VBZ is) (SBAR (WHADVP (WRB when)) (S (NP (PRP you)) (VP (VB touch) (NP (DT a) (JJ charged) (NN object)) (PP (TO to) (NP (DT the) (NN earth))))))) (. .)))