( ( Illustrate ( ( ( ( the effects ) ( of force ) ) ( -LRB- ( ( including ( ( ( ( ( magnetism , ) gravity ) , ) and ) friction ) ) -RRB- ) ) ) ( on motion ) ) ) . )
(ROOT (S (VP (VB Illustrate) (NP (NP (DT the) (NNS effects)) (PP (IN of) (NP (NN force))) (PRN (-LRB- -LRB-) (PP (VBG including) (NP (NP (NN magnetism)) (, ,) (NP (NN gravity)) (, ,) (CC and) (NP (NN friction)))) (-RRB- -RRB-)) (PP (IN on) (NP (NN motion))))) (. .)))
Illustrate the effects of force (including magnetism, gravity, and friction) on motion.
(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.