A man in a gray shirt playing a whistle.
a musician entertains a crowd with his whistle
A man doesn't have to be a musician to play a whistle.  The man can play a whistle without entertaining a crowd.
exists e1 s1 x1 x2 x3 x4.(a_topic(x1) & in(x1,x2) & Theme(e1,x4) & Actor(e1,x3) & v_play(e1) & n_whistle(x4) & (x2 = x3) & n_shirt(x2) & a_gray(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2 x3.(Theme(e1,x2) & Actor(e1,x1) & v_entertain(e1) & with(x2,x3) & n_whistle(x3) & of(x3,x1) & n_male(x1) & n_crowd(x2) & n_musician(x1))