A man and a woman are sitting at a table, accompanied by a dog, at the edge of a street.
Nobody is sitting.
If a man and a woman are sitting, then somebody is sitting.
exists e1 e2 x1 x2 x3 x4 x5 x6 x7 x8.(n_edge(x7) & at(e1,x7) & of(x7,x8) & n_street(x8) & at(e1,x4) & Actor(e2,x6) & n_dog(x6) & Theme(e2,x5) & v_accompany(e2) & (x4 = x5) & n_table(x4) & Actor(e1,x1) & v_sit(e1) & subset_of(x3,x1) & n_woman(x3) & subset_of(x2,x1) & n_man(x2))
-exists e1 x1.(Actor(e1,x1) & v_sit(e1) & n_person(x1))