A skateboarder grinds along a pipe beneath a fire escape.
A skateboarder is near a building.
A skateboarder beneath a fire escape must be near a building.
exists e1 x1 x2 x3 x4.(beneath(e1,x3) & n_escape(x3) & of(x3,x4) & n_fire(x4) & along(e1,x2) & n_pipe(x2) & Actor(e1,x1) & v_grind(e1) & n_skateboarder(x1))
exists p1 x1.(exists x2.(near(x1,x2) & n_building(x2)) & n_skateboarder(x1))