A biker flies through the air near sand dunes.
The biker is outside in the sand dunes.
Sand dunes are found outside.
exists e1 x1 x2 x3 x4.(n_air(x2) & through(e1,x2) & near(x2,x3) & n_dune(x3) & of(x3,x4) & n_sand(x4) & Actor(e1,x1) & v_fly(e1) & n_biker(x1))
exists s1 x1 x2 x3.(n_dune(x2) & of(x2,x3) & n_sand(x3) & n_biker(x1) & in(s1,x2) & Theme(s1,x1) & a_outside(s1))