President Bush delivers a speech to a large audience.
The president is singing in a contest.
Delivering a speech and singing are not the same.
exists e1 s1 x1 x2 x3 x4.(ne_per_bush(x1) & (x1 = x2) & ne_nam_president(x2) & Theme(e1,x3) & Actor(e1,x1) & v_deliver(e1) & to(x3,x4) & n_audience(x4) & a_large(s1) & Theme(s1,x4) & n_speech(x3))
exists e1 x1 x2.(n_president(x1) & in(e1,x2) & n_contest(x2) & Actor(e1,x1) & v_sing(e1))