A helicopter and a small plane are in the air.
A helicopter and a small plane are performing at an air show.
A helicopter and a small plane are in the air does not indicate that they are performing at an air show.
exists p1 s1 x1 x2 x3 x4.(n_air(x4) & in(x1,x4) & subset_of(x3,x1) & n_plane(x3) & a_small(s1) & Theme(s1,x3) & subset_of(x2,x1) & n_helicopter(x2))
exists e1 s1 x1 x2 x3 x4 x5.(at(e1,x4) & n_show(x4) & of(x4,x5) & n_air(x5) & Actor(e1,x1) & v_perform(e1) & subset_of(x3,x1) & n_plane(x3) & a_small(s1) & Theme(s1,x3) & subset_of(x2,x1) & n_helicopter(x2))