A plane doing tricks in the air, leaving a smoke trail behind the plane.
A plane crashes into the ocean.
A plane can't be doing tricks in the air while it crashes into the ocean.
exists e1 e2 x1 x2 x3 x4 x5 x6.(n_air(x4) & a_topic(x1) & for(e1,e2) & behind(e2,x1) & n_plane(x1) & n_plane(x1) & Theme(e2,x5) & Actor(e2,x2) & v_leave(e2) & n_trail(x5) & of(x5,x6) & n_smoke(x6) & in(e1,x4) & Theme(e1,x3) & Actor(e1,x2) & v_do(e1) & n_trick(x3) & (x1 = x2))
exists e1 x1 x2.(n_ocean(x2) & into(e1,x2) & Actor(e1,x1) & v_crash(e1) & n_plane(x1))