( ( Both ( the ( Coulomb ( and ( gravity forces ) ) ) ) ) ( ( are ( inverse ( square laws ) ) ) . ) )
(ROOT (S (NP (PDT Both) (DT the) (NNP Coulomb) (CC and) (NNP gravity) (NNS forces)) (VP (VBP are) (NP (JJ inverse) (JJ square) (NNS laws))) (. .)))
Both the Coulomb and gravity forces are inverse square laws.
(ROOT (S (NP (NNP Gravity) (CC and) (NNP magnetism)) (VP (VBP are) (NP (DT both) (JJ common) (NNS forces))) (. .)))
Gravity and magnetism are both common forces.