People are in a bar looking to order something.
People are hungry or thirsty.
Not all people looking to order something are hungry or thirsty.
exists p1 x1.(exists e1 p2 x2 x3.(in(x1,x2) & Topic(e1,p2) & Actor(e1,x3) & v_look(e1) & exists e2 x4.(Theme(e2,x4) & Actor(e2,x3) & v_order(e2) & n_thing(x4)) & (x2 = x3) & n_bar(x2)) & n_people(x1))
(exists s1 x1.(Theme(s1,x1) & a_hungry(s1) & n_people(x1)) | exists s2 x2.(Theme(s2,x2) & a_thirsty(s2) & n_people(x2)))