( Electrons ( ( have ( a ( ( negative ( -LRB- ( - -RRB- ) ) ) ( electric charge ) ) ) ) . ) )
(ROOT (S (NP (NNS Electrons)) (VP (VBP have) (NP (DT a) (ADJP (ADJP (JJ negative)) (PRN (-LRB- -LRB-) (VB -) (-RRB- -RRB-))) (JJ electric) (NN charge))) (. .)))
Electrons have a negative (-) electric charge.
(ROOT (S (NP (JJ Electrical) (NN force)) (VP (VBZ has) (NP (JJ negative) (NN attraction))) (. .)))
Electrical force has negative attraction.