( ( These ( two ( un-like charges ) ) ) ( ( attract ( one another ) ) . ) )
(ROOT (S (NP (DT These) (CD two) (JJ un-like) (NNS charges)) (VP (VBP attract) (NP (CD one) (DT another))) (. .)))
These two un-like charges attract one another.
(ROOT (S (NP (JJ Opposite) (NNS charges)) (VP (VBP attract) (NP (CD one) (DT another))) (. .)))