( ( Electricity ( , ( ( magnetism & ) electromagnetism ) ) ) ; )
(ROOT (NP (NP (NNP Electricity) (, ,) (NNP magnetism) (CC &) (NNP electromagnetism)) (: ;)))
Electricity, magnetism &amp; electromagnetism ;
(ROOT (S (NP (NNP Electromagnetism)) (VP (VBZ is) (NP (NP (NN magnetism)) (VP (VBN produced) (PP (IN by) (NP (DT an) (JJ electrical) (NN current)))))) (. .)))