Two dogs and a truck.
The dogs are attempting to climb into the truck.
There is no description of what the dogs are doing, so it cannot be inferred they were attempting to climb into the truck.
exists s1 x1 x2.(a_topic(s1) & subset_of(x2,s1) & n_truck(x2) & subset_of(x1,s1) & n_dog(x1) & card_eq_2(x1))
exists e1 p1 x1 x2.(n_truck(x2) & n_dog(x1) & Topic(e1,p1) & Actor(e1,x1) & v_attempt(e1) & exists e2.(into(e2,x2) & Actor(e2,x1) & v_climb(e2)))