Dog running across sand.
A dog is outdoors.
A dog is running across sand while outdoors.
exists e1 x1 x2.(ne_nam_dog(x1) & across(e1,x2) & n_sand(x2) & Actor(e1,x1) & v_run(e1))
exists p1 x1.(exists x2.((x1 = x2) & n_outdoors(x2)) & n_dog(x1))