Two persons repairing their bicycle.
The bicycle needs repair.
The bicycle needs repair because people are repairing the bicycle.
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 x1 x2.(n_bicycle(x1) & Theme(e1,x2) & Actor(e1,x1) & v_need(e1) & n_repair(x2))