Many bikes are parked next to one another.
people are prepairing for a biakatholon
Parked next to does not imply prepairing (preparing) for.
exists e1 s1 x1 x2.(to(e1,x2) & n_thing(x2) & card_eq_1(x2) & a_another(s1) & Theme(s1,x2) & r_next(e1) & Theme(e1,x1) & v_park(e1) & n_bike(x1) & n_quantity(x1))
exists e1 x1 x2.(for(e1,x2) & n_biakatholon(x2) & Actor(e1,x1) & v_prepair(e1) & n_people(x1))