( It ( ( ( 's ( like ( ( ( a ( subatomic particle ) ) , ) ( an electron ) ) ) ) perhaps ) . ) )
(ROOT (S (NP (PRP It)) (VP (VBZ 's) (PP (IN like) (NP (NP (DT a) (JJ subatomic) (NN particle)) (, ,) (NP (DT an) (NN electron)))) (ADVP (RB perhaps))) (. .)))
It's like a subatomic particle, an electron perhaps.
(ROOT (S (NP (DT A) (NN redox) (NN reaction)) (VP (VBZ rearranges) (NP (NP (DT the) (JJ subatomic) (NNS particles)) (VP (VBN known) (PP (IN as) (NP (NNS electrons)))))) (. .)))