premise: A guy on Rollerblades, sliding across a rail.
hypothesis: The rollderblader is using the rail.
explanation_1: The person is a rolderblader (rollerblader) because he is a guy on rollerblades.
explanation_2: A GUY SLIDES IN ROLLERBLADER USING THE RAIL
explanation_3: A Rollerblade is used in a rail.
premise_logic: exists e1 x1 x2 x3 x4.(ne_org_rollerblades(x2) & a_topic(x1) & across(e1,x4) & n_rail(x4) & Actor(e1,x3) & v_slide(e1) & (x1 = x3) & on(x1,x2) & n_guy(x1))
hypothesis_logic: exists e1 x1 x2.(n_rail(x2) & n_rollderblader(x1) & Theme(e1,x2) & Actor(e1,x1) & v_use(e1))