Two persons repairing their bicycle.
Two people are fixing a bike they stole.
Bike and bicycle are different
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_repair(e1) & n_bicycle(x2) & of(x2,x1) & n_thing(x1) & n_person(x1) & card_eq_2(x1))
exists e1 e2 x1 x2 x3.(Theme(e2,x2) & Actor(e2,x1) & v_fix(e2) & Theme(e1,x3) & Actor(e1,x1) & v_steal(e1) & (x2 = x3) & n_thing(x1) & n_bike(x2) & n_people(x1) & card_eq_2(x1))