four people sit eating together at a table with another person in the background facing away.
The friends are all at the table while their enemy looks on.
People eating together are not implied to be friends.  Someone in the background looking away is not implied to be their enemy.
exists e1 p1 x1 x3 x5.(n_background(x5) & n_person(x3) & exists e3 e2 p2 p3 x2 x4.(exists s2.(Theme(s2,x4) & a_away(s2)) & Topic(e3,p3) & Actor(e3,x4) & v_face(e3) & with(e2,x4) & in(x4,x5) & n_person(x4) & -(x4 = x3) & at(e2,x2) & n_table(x2) & exists s1.(Theme(s1,x1) & a_together(s1)) & Topic(e2,p2) & Actor(e2,x1) & v_eat(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_sit(e1) & n_people(x1) & card_eq_4(x1))
exists p1 p2 x1 x2 x4.(n_enemy(x4) & of(x4,x2) & n_thing(x2) & n_table(x2) & n_friend(x1) & exists e1 p3.(exists s1.(Theme(s1,x4) & a_on(s1)) & Topic(e1,p3) & Actor(e1,x4) & v_look(e1)) & while(p1,p2) & at(p1,x2) & all x3.(n_thing(x3) -> (x1 = x3)))