A man in costume drums in a parade.
There is a group of people dancing.
One either drums or is dancing, not both.
exists s1 x1 x2 x3.(a_topic(x1) & in(x1,x2) & in(x2,x3) & n_parade(x3) & n_drum(x2) & a_costume(s1) & Theme(s1,x2) & n_man(x1))
exists p1 x1 e1 x2 x3 x4.((x1 = x2) & of(x2,x3) & Actor(e1,x4) & v_dance(e1) & (x3 = x4) & n_people(x3) & n_group(x2))