Three young adults pose for the camera.
Three people swim with dolphins.
You can't pose for the camera and swim at the same time. Posing means being still to get the shot, while swimming is active. Taking your eyes off of a dolphin when you're sharing space with it must not be advisable, either.
exists e1 s1 x1 x2.(n_camera(x2) & for(e1,x2) & Actor(e1,x1) & v_pose(e1) & n_adult(x1) & a_young(s1) & Theme(s1,x1) & card_eq_3(x1))
exists e1 x1 x2.(with(e1,x2) & n_dolphin(x2) & Actor(e1,x1) & v_swim(e1) & n_people(x1) & card_eq_3(x1))