A person wearing Rollerblades slides along a handrail.
Someone slides down a handrail.
Someone sliding down a handrail could also be wearing rollerblades as they slide along the handrail.
exists e1 e2 x1 x2 x3 x4.(ne_org_rollerblades(x3) & along(e2,x4) & n_handrail(x4) & Actor(e2,x1) & v_slide(e2) & Theme(e1,x3) & Actor(e1,x2) & v_wear(e1) & (x1 = x2) & n_person(x1))
exists e1 s1 x1 x2.(a_down(s1) & Manner(e1,s1) & Theme(e1,x2) & Actor(e1,x1) & v_slide(e1) & n_handrail(x2) & n_person(x1))