A man plays the drums with a serious expression.
A man is learning to play the drums.
The man may not be learning to play.
exists e1 s1 x1 x2 x3.(n_drum(x2) & with(e1,x3) & n_expression(x3) & a_serious(s1) & Theme(s1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_man(x1))
exists e1 p1 x1 x2.(n_drum(x2) & Topic(e1,p1) & Actor(e1,x1) & v_learn(e1) & exists e2.(Theme(e2,x2) & Actor(e2,x1) & v_play(e2)) & n_man(x1))