A person rollerblading near a building.
A person is wearing rollerblades.
If a person is rollerblading they are wearing rollerblades.
exists e1 x1 x2 x3.(a_topic(x1) & near(e1,x3) & n_building(x3) & Actor(e1,x2) & v_rollerblade(e1) & (x1 = x2) & n_person(x1))
exists e1 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_wear(e1) & n_rollerblade(x2) & n_person(x1))