A brown dog in midair with a Frisbee in his mouth.
A brown dog is outside with it's owner.
A dog's being in midair with a frisbee implies that the dog caught it. This would require its being outside.
exists s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & with(x2,x3) & in(x3,x4) & n_mouth(x4) & of(x4,x1) & n_male(x1) & n_frisbee(x3) & n_midair(x2) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))
exists p1 s1 s2 x1 x2.(exists x3.((x1 = x3) & n_owner(x3)) & with(s2,x1) & n_thing(x1) & Theme(s2,x2) & a_outside(s2) & (x1 = x2) & n_dog(x1) & a_brown(s1) & Theme(s1,x1))