A rider stands for a moment above his dirk bike.
A person is outdoors.
A rider, who is a person, is standing outside above a dirk bike.
exists e1 x1 x2 x3 x4.(above(e1,x3) & n_bike(x3) & of(x3,x4) & n_dirk(x4) & of(x3,x1) & n_male(x1) & for(e1,x2) & n_moment(x2) & Actor(e1,x1) & v_stand(e1) & n_rider(x1))
exists p1 x1.(exists x2.((x1 = x2) & n_outdoors(x2)) & n_person(x1))