A young black boy is playing tennis.
An old white guy is farting.
A black boy cannot be a white guy. Playing tennis is not the same thing as farting.
exists e1 s1 s2 x1 x2.(Theme(e1,x2) & Actor(e1,x1) & v_play(e1) & n_tennis(x2) & n_boy(x1) & a_black(s2) & Theme(s2,x1) & a_young(s1) & Theme(s1,x1))
exists e1 s1 s2 x1.(Actor(e1,x1) & v_fart(e1) & n_guy(x1) & a_white(s2) & Theme(s2,x1) & a_old(s1) & Theme(s1,x1))