A boy and a girl swinging on a barrel.
a boy and girl are kissing
They cannot both be swining on a barrel and kissing simultaneously.
exists e1 s1 x1 x2 x3 x4.(a_topic(s1) & subset_of(x2,s1) & on(e1,x4) & n_barrel(x4) & Actor(e1,x3) & v_swing(e1) & (x2 = x3) & n_girl(x2) & subset_of(x1,s1) & n_boy(x1))
exists e1 x1 x2 x3.(Actor(e1,x1) & v_kiss(e1) & n_girl(x3) & n_boy(x2) & subset_of(x3,x1) & subset_of(x2,x1))