Four people are sitting at a table on the side of a street.
Four people are sitting at a table on the side of a street, talking.
The first sentence establishes the four people, that they are sitting, and that they are on the side of a street at a table. The second sentence does the same thing, but includes the detail that they are talking.
exists e1 x1 x2 x3 x4.(n_side(x3) & at(e1,x2) & on(x2,x3) & of(x3,x4) & n_street(x4) & n_table(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_4(x1))
exists e2 e1 x1 x2 x3 x4.(n_side(x3) & for(e1,e2) & Actor(e2,x1) & v_talk(e2) & at(e1,x2) & on(x2,x3) & of(x3,x4) & n_street(x4) & n_table(x2) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_4(x1))