An asian man giving a speech.
A man gives a speech about the environment.
Just because a man is giving a speech it does not mean it is about the environment.
exists e1 s1 x1 x2 x3.(a_topic(x1) & Theme(e1,x3) & Actor(e1,x2) & v_give(e1) & n_speech(x3) & (x1 = x2) & n_man(x1) & a_asian(s1) & Theme(s1,x1))
exists e1 x1 x2 x3.(n_environment(x3) & Theme(e1,x2) & Actor(e1,x1) & v_give(e1) & about(x2,x3) & n_speech(x2) & n_man(x1))