Two dogs shaking off water droplets on a beach.
There are two dogs
Both sentences mention two dogs but you cannot infer that there are not also other dogs there that are not shaking off water droplets.
exists e1 s1 x1 x2 x3 x4 x5.(a_topic(x1) & on(e1,x5) & n_beach(x5) & a_off(s1) & Manner(e1,s1) & Theme(e1,x3) & Actor(e1,x2) & v_shake(e1) & n_droplet(x3) & of(x3,x4) & n_water(x4) & (x1 = x2) & n_dog(x1) & card_eq_2(x1))
exists p1 x1 x2.((x1 = x2) & n_dog(x2) & card_eq_2(x2))