A man and a woman smile for the camera.
The man and woman know they are being photographed.
Smile for the camera implies they are being photographed.
exists s1 x1 x2 x3 x4.(n_camera(x4) & a_topic(s1) & subset_of(x2,s1) & for(x2,x4) & n_smile(x2) & of(x2,x3) & n_woman(x3) & subset_of(x1,s1) & n_man(x1))
exists e1 p1 x1 x2 x3.(n_thing(x2) & n_woman(x3) & n_man(x2) & subset_of(x3,x1) & subset_of(x2,x1) & exists e2.(Theme(e2,x2) & v_photograph(e2)) & Topic(e1,p1) & Actor(e1,x1) & v_know(e1))