( ( Suppose ( ( an object ) ( ( is either ) ( ( ( compressed or ) stressed ) ( due ( to ( a force ) ) ) ) ) ) ) . )
(ROOT (S (VP (VB Suppose) (SBAR (S (NP (DT an) (NN object)) (VP (VBZ is) (RB either) (VP (VBN compressed) (CC or) (VBN stressed) (PP (JJ due) (TO to) (NP (DT a) (NN force)))))))) (. .)))
Suppose an object is either compressed or stressed due to a force.
(ROOT (S (NP (NP (DT The) (NN force)) (VP (VBN applied) (PP (TO to) (NP (DT an) (NN object))))) (VP (VBZ is) (VP (VBN called) (NP (NN stress)))) (. .)))