( We ( ( accept ( that ( ( an ( invisible force ) ) ( exists ( which ( ( causes ( two magnets ) ) ( to ( either ( ( attract or ) ( ( repel ( each other ) ) ( when ( brought ( close together ) ) ) ) ) ) ) ) ) ) ) ) ) . ) )
(ROOT (S (NP (PRP We)) (VP (VBP accept) (SBAR (IN that) (S (NP (DT an) (JJ invisible) (NN force)) (VP (VBZ exists) (SBAR (WHNP (WDT which)) (S (VP (VBZ causes) (NP (CD two) (NNS magnets)) (S (VP (TO to) (VP (DT either) (VP (VB attract)) (CC or) (VP (VB repel) (NP (DT each) (JJ other)) (SBAR (WHADVP (WRB when)) (S (VP (VBD brought) (ADVP (RB close) (RB together)))))))))))))))) (. .)))
We accept that an invisible force exists which causes two magnets to either attract or repel each other when brought close together.
(ROOT (S (S (VP (VBG Increasing) (NP (NP (DT the) (NN distance)) (PP (IN between) (NP (DT the) (CD two) (NNS magnets)))))) (VP (MD will) (VP (VB cause) (NP (DT a) (NN decrease)) (PP (IN in) (NP (NP (DT the) (NN force)) (PP (IN of) (NP (NP (NN attraction)) (PP (IN between) (NP (CD two) (NNS magnets))))))))) (. .)))
Increasing the distance between the two magnets will cause a decrease in the force of attraction between two magnets.