People sitting at a dining table raise their glasses in a toast.
People are at a dining table.
Just because people are sitting at a table does not mean they are at a dining table.
exists e1 e2 x1 x2 x3 x4 x5 x6.(Theme(e2,x5) & Actor(e2,x1) & v_raise(e2) & in(x5,x6) & n_toast(x6) & n_glass(x5) & of(x5,x1) & n_thing(x1) & at(e1,x3) & n_table(x3) & of(x3,x4) & n_dining(x4) & Actor(e1,x2) & v_sit(e1) & (x1 = x2) & n_people(x1))
exists p1 x1.(exists x2 x3.(at(x1,x2) & n_table(x2) & of(x2,x3) & n_dining(x3)) & n_people(x1))