A boy poses for the camera at a party.
The boy takes a picture.
Poses for the camera can't be done simultaneously while the boy takes a picture.
exists e1 x1 x2 x3.(n_camera(x2) & for(e1,x2) & at(x2,x3) & n_party(x3) & Actor(e1,x1) & v_pose(e1) & n_boy(x1))
exists e1 x1 x2.(n_boy(x1) & Theme(e1,x2) & Actor(e1,x1) & v_take(e1) & n_picture(x2))