A light brown dog jumps over a hurdle indoors.
A dog jumps over the hurdle inside the arena.
Just because a dog jumps over a hurdle indoors does not mean it is inside an arena. They may be indoors at home.
exists s1 s2 x1 x2 x3 x4.(a_topic(x1) & over(x1,x3) & n_indoor(x3) & of(x3,x4) & n_hurdle(x4) & n_jump(x1) & of(x1,x2) & n_dog(x2) & a_brown(s2) & Theme(s2,x1) & a_light(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_arena(x3) & n_hurdle(x2) & over(e1,x2) & inside(x2,x3) & Actor(e1,x1) & v_jump(e1) & n_dog(x1))