A family is playing on the beach with their dog.
a family sitting at the dinner table enjoying, what use to be, Fido.
A group of people 'playing on a beach with their dog' would be outside and on their feet, and the dog could be assumed to be alive; while people 'sitting at a dinner table enjoying, what use to be, Fido' are inside, not on their feet, and Fido is presumably dead.
exists e1 x1 x2 x3.(n_dog(x3) & of(x3,x2) & n_thing(x2) & n_beach(x2) & with(e1,x3) & on(e1,x2) & Actor(e1,x1) & v_play(e1) & n_family(x1))
exists e1 e2 s1 x1 x2 x3 x4 x5 x7.(ne_per_fido(x7) & a_,(s1) & Theme(s1,x7) & n_table(x3) & of(x3,x4) & n_dinner(x4) & a_topic(x1) & exists p1 x6.(n_use(x6) & rel(x1,x6) & Topic(x6,p1) & exists p2.(x6 = x7)) & at(e1,x3) & Actor(e2,x5) & v_enjoy(e2) & (x3 = x5) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_family(x1))