A dog gets its legs tangled with a stick.
A dog trips over a stick while running across an open meadow.
A dog getting its legs tangled doesn't mean the dog trips over a stick let alone that the dog is running outside across an open meadow
exists e1 e2 x1 x2 x3 x4.(Theme(e2,x2) & Actor(e2,x1) & v_get(e2) & with(e1,x4) & n_stick(x4) & Actor(e1,x3) & v_tangle(e1) & (x2 = x3) & n_leg(x2) & of(x2,x1) & n_thing(x1) & n_dog(x1))
exists e1 e2 s1 x1 x2 x3.(while(e1,e2) & across(e2,x3) & n_meadow(x3) & a_open(s1) & Theme(s1,x3) & Actor(e2,x1) & v_run(e2) & over(e1,x2) & n_stick(x2) & Actor(e1,x1) & v_trip(e1) & n_dog(x1))