A man in a white shirt is playing with a Frisbee.
A man in black is playing Frisbee.
The man can't be wearing black while in white.
exists e1 s1 x1 x2 x3.(with(e1,x3) & n_frisbee(x3) & Actor(e1,x1) & v_play(e1) & in(x1,x2) & n_shirt(x2) & a_white(s1) & Theme(s1,x2) & n_man(x1))
exists e1 x1 x2 x3.(ne_per_frisbee(x3) & Theme(e1,x3) & Actor(e1,x1) & v_play(e1) & in(x1,x2) & n_black(x2) & n_man(x1))