The light brown dog and dark brown dog are running in the green grass.
The dogs a catching a tennis ball.
JUST BECAUSE THE DOGS ARE RUNNING IN THE GRASS DOES NOT MEAN THEY ARE CATCHING A TENNIS BALL.
exists e1 s1 s2 s3 s4 s5 x1 x2 x3 x4.(n_grass(x4) & a_green(s5) & Theme(s5,x4) & n_dog(x3) & a_brown(s4) & Theme(s4,x3) & a_dark(s3) & Theme(s3,x3) & n_dog(x2) & subset_of(x3,x1) & subset_of(x2,x1) & a_brown(s2) & Theme(s2,x1) & a_light(s1) & Theme(s1,x1) & in(e1,x4) & Actor(e1,x1) & v_run(e1))
exists x3.(n_dog(x3) & all x1 e1 x2.((n_ball(x1) & of(x1,x2) & n_tennis(x2) & Actor(e1,x1) & v_catch(e1)) -> (a_topic(x3) & for(x3,x1))))