Marines standing at attention being spoken to by a superior.
Marines standing at attention listening to a superior.
Just because they are being spoken to does not mean they are listening.
exists e1 e2 x1 x2 x3 x4.(Actor(e1,x4) & n_superior(x4) & to(e1,x1) & at(e2,x3) & n_attention(x3) & Actor(e2,x2) & v_stand(e2) & (x1 = x2) & n_marine(x1) & v_speak(e1))
exists e1 x1 x2 x3 x4 x5.(a_topic(x1) & to(e1,x5) & n_superior(x5) & at(e1,x3) & n_listening(x3) & of(x3,x4) & n_attention(x4) & Actor(e1,x2) & v_stand(e1) & (x1 = x2) & n_marine(x1))