A little boy plays a homemade drum while two other boys stand behind him looking at the camera.
The boy playing the drum didn't notice the camera yet.
A boy plays the drum does not imply the boy didn't notice the camera.
exists e1 e2 p1 s1 x1 x2 x3 x5.(n_camera(x5) & exists e4 e3 x4.(for(e3,e4) & at(e4,x5) & Actor(e4,x4) & v_look(e4) & behind(e3,x1) & Actor(e3,x4) & v_stand(e3) & -(x4 = x1) & n_boy(x4) & card_eq_2(x4)) & n_male(x1) & n_boy(x1) & n_boy(x1) & while(e2,p1) & Actor(e2,x1) & v_drum(e2) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & n_homemade(x3) & (x1 = x2) & a_little(s1) & Theme(s1,x1))
exists e1 x1 x2 x3 x4.(n_camera(x4) & n_drum(x3) & n_boy(x1) & -exists e2 s1.(a_yet(s1) & Manner(e2,s1) & Theme(e2,x4) & Actor(e2,x1) & v_notice(e2)) & Theme(e1,x3) & Actor(e1,x2) & v_play(e1) & (x1 = x2))