a little girl learns to surf with an instructor.
A girl is learning how to fly a plane.
The girl is either learning to surf or fly, but not at the same time.
exists e1 p1 s1 x1.(Topic(e1,p1) & Actor(e1,x1) & v_learn(e1) & exists e2 x2.(with(e2,x2) & n_instructor(x2) & Actor(e2,x1) & v_surf(e2)) & n_girl(x1) & a_little(s1) & Theme(s1,x1))
exists e1 x1 x2.(Topic(e1,x2) & Actor(e1,x1) & v_learn(e1) & n_manner(x2) & exists e2 x3 x4.(Theme(e2,x4) & Actor(e2,x3) & v_fly(e2) & n_plane(x4)) & n_girl(x1))