A boy doing a back flip off of a sand dune.
A boy moving around outdoors.
moving could include a back flip. sand dune is found outdoors.
exists e1 s1 x1 x2 x3 x4 x5 x6.(a_topic(x1) & of(e1,x5) & n_dune(x5) & of(x5,x6) & n_sand(x6) & r_off(e1) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & Theme(s1,x4) & a_flip(s1) & (x3 = x4) & n_back(x3) & (x1 = x2) & n_boy(x1))
exists e1 x1 x2 x3.(a_topic(x1) & around(e1,x3) & n_outdoors(x3) & Actor(e1,x2) & v_move(e1) & (x1 = x2) & n_boy(x1))