A man in a blue shirt with white flowers is playing a saxophone.
A man is required to wear a Hawaiian themed shirt at his concert.
For a man to be in a flowered shirt playing a saxophone doesn't mean he is playing at his concert because he could be playing anywhere, let alone that he is required to wear a Hawaiian shirt.
exists e1 s1 s2 x1 x2 x3 x4.(Theme(e1,x4) & Actor(e1,x1) & v_play(e1) & n_saxophone(x4) & in(x1,x2) & with(x2,x3) & n_flower(x3) & a_white(s2) & Theme(s2,x3) & n_shirt(x2) & a_blue(s1) & Theme(s1,x2) & n_man(x1))
exists e1 p1 x1 x3.(Recipient(e1,p1) & Topic(e1,x1) & v_require(e1) & exists e2 s1 s2 x2.(at(e2,x3) & Theme(e2,x2) & Actor(e2,x1) & v_wear(e2) & n_shirt(x2) & a_themed(s2) & Theme(s2,x2) & a_hawaiian(s1) & Theme(s1,x2)) & n_concert(x3) & of(x3,x1) & n_male(x1) & n_man(x1))