Many dogs are shown in the grass.
a lot of dogs are in the grass.
Both sentence are talking about dogs.
exists e1 x1 x2.(n_grass(x2) & in(e1,x2) & Theme(e1,x1) & v_show(e1) & n_dog(x1) & n_quantity(x1))
exists p1 x1 x2 x3.(n_grass(x3) & in(x1,x3) & of(x1,x2) & n_dog(x2) & n_lot(x1))