Five men repairing mountain bikes.
Five men are riding bikes.
Men cannot be repairing bikes and at the same time riding the bikes.
exists e1 x1 x2 x3 x4.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_repair(e1) & n_bike(x3) & of(x3,x4) & n_mountain(x4) & (x1 = x2) & n_man(x1) & card_eq_5(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_bike(x2) & n_man(x1) & card_eq_5(x1))