Bikers compete in a long winded endurance test.
People are competing against each other for a trophy.
Not all endurance tests are for a trophy
exists e1 s1 s2 x1 x2 x3.(in(e1,x2) & n_test(x2) & of(x2,x3) & n_endurance(x3) & a_winded(s2) & Theme(s2,x2) & a_long(s1) & Theme(s1,x2) & Actor(e1,x1) & v_compete(e1) & n_biker(x1))
exists e1 x1 x2.(for(e1,x2) & n_trophy(x2) & all x3.(n_other(x3) -> against(e1,x3)) & Actor(e1,x1) & v_compete(e1) & n_people(x1))