The floor is tiled.
There are tiled floors inside
Not all tiled floors are inside.
exists e1 x1.(n_floor(x1) & Theme(e1,x1) & v_tile(e1))
exists p1 x1 e1 x2.((x1 = x2) & r_inside(x2) & n_floor(x2) & Theme(e1,x2) & v_tile(e1))