Skateboarder slides across rail in corridor.
The skateboarder rail-rides in a corridor
Skateboarder slides across rail is a rephrasing of rail-rides.
exists e1 x1 x2 x3.(ne_nam_skateboarder(x1) & in(e1,x3) & n_corridor(x3) & across(e1,x2) & n_rail(x2) & Actor(e1,x1) & v_slide(e1))
exists x1 x2 x3.(n_rail-ride(x1) & of(x1,x2) & n_skateboarder(x2) & a_topic(x1) & in(x1,x3) & n_corridor(x3))