person skateboarding on street wearing equipment
Person is outside.
Skateboarding on the street already implies that the person is outside.
exists e1 e2 x1 x2 x3 x4.(a_topic(x1) & on(e1,x3) & n_equipment(x3) & Actor(e2,x3) & v_wear(e2) & of(x3,x4) & n_street(x4) & Actor(e1,x2) & v_skateboard(e1) & (x1 = x2) & n_person(x1))
exists s1 x1.(ne_nam_person(x1) & Theme(s1,x1) & a_outside(s1))