A man in a black shirt prepares to play the drum.
a man is about to do a drum solo
A man prepares to play the drum does not imply about to do a drum solo.
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.(Topic(s1,p1) & Actor(s1,x1) & a_about(s1) & exists e1 s2 x2.(Theme(e1,x2) & Actor(e1,x1) & v_do(e1) & n_solo(x2) & a_drum(s2) & Theme(s2,x2)) & n_man(x1))