A man in a black shirt prepares to play the drum.
a man is about to play the drums
A person prepares before they are right about to do something.
exists e1 p1 s1 x1 x2 x3.(n_drum(x3) & Topic(e1,p1) & Actor(e1,x1) & v_prepare(e1) & exists e2.(Theme(e2,x3) & Actor(e2,x1) & v_play(e2)) & in(x1,x2) & n_shirt(x2) & a_black(s1) & Theme(s1,x2) & n_man(x1))
exists p1 s1 x1 x2.(n_drum(x2) & Topic(s1,p1) & Actor(s1,x1) & a_about(s1) & exists e1.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1)) & n_man(x1))