a man playing with two black dogs on the beach
These dogs are sentient, and they have a man as a pet.
No way to know that the dogs are sentient.
exists e1 s1 x1 x2 x3 x4.(n_beach(x4) & a_topic(x1) & on(e1,x4) & with(e1,x3) & n_dog(x3) & a_black(s1) & Theme(s1,x3) & card_eq_2(x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2) & n_man(x1))
exists e1 s1 x1 x2 x3.(n_thing(x1) & n_dog(x1) & Theme(e1,x2) & Actor(e1,x1) & v_have(e1) & as(x2,x3) & n_pet(x3) & n_man(x2) & Theme(s1,x1) & a_sentient(s1))