A guy showing his bike to a kid.
A man is showing his skateboard to another.
The same object cannot be both a kid and another man.
exists e1 x1 x2 x3 x4.(a_topic(x1) & to(e1,x4) & n_kid(x4) & Theme(e1,x3) & Actor(e1,x2) & v_show(e1) & n_bike(x3) & of(x3,x1) & n_male(x1) & (x1 = x2) & n_guy(x1))
exists e1 x1 x2 x3.(to(e1,x3) & n_thing(x3) & Theme(e1,x2) & Actor(e1,x1) & v_show(e1) & n_skateboard(x2) & of(x2,x1) & n_male(x1) & n_man(x1))