A person is jumping at the top of a sand dune.
A doctor is running by the sand.
Jumping is staying in place, while running is the act of moving from one place to another.
exists e1 x1 x2 x3 x4.(n_top(x2) & at(e1,x2) & of(x2,x3) & n_dune(x3) & of(x3,x4) & n_sand(x4) & Actor(e1,x1) & v_jump(e1) & n_person(x1))
exists e1 x1 x2.(n_sand(x2) & by(e1,x2) & Actor(e1,x1) & v_run(e1) & n_doctor(x1))