A dog with mouth open to catch the red ball.
A chihuahua is trying to catch the red rubber ball.
Not all red balls are rubber and a dog with an open mouth is not necessarily a Chihuahua.
exists p1 s1 s2 x1 x2 x3 x4.(n_ball(x4) & a_red(s2) & Theme(s2,x4) & a_topic(x1) & with(x1,x2) & Topic(s1,p1) & Actor(s1,x3) & a_open(s1) & exists e1.(Theme(e1,x4) & Actor(e1,x3) & v_catch(e1)) & (x2 = x3) & n_mouth(x2) & n_dog(x1))
exists e1 p1 s1 x1 x2 x3.(n_ball(x2) & of(x2,x3) & n_rubber(x3) & a_red(s1) & Theme(s1,x2) & Topic(e1,p1) & Actor(e1,x1) & v_try(e1) & exists e2.(Theme(e2,x2) & Actor(e2,x1) & v_catch(e2)) & n_chihuahua(x1))