Men on horses displaying their flags at a joust.
Men are on brown horses.
Not all horses are brown
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & on(x1,x2) & at(e1,x5) & n_joust(x5) & Theme(e1,x4) & Actor(e1,x3) & v_display(e1) & n_flag(x4) & of(x4,x1) & n_thing(x1) & (x2 = x3) & n_horse(x2) & n_man(x1))
exists p1 x1.(exists s1 x2.(on(x1,x2) & n_horse(x2) & a_brown(s1) & Theme(s1,x2)) & n_man(x1))