People gathered around a guy sitting on a table.
The man is riding a unicycle.
The man cannot be sitting on a table and riding a unicycle the same time.
exists e2 e1 x1 x2 x3.(for(e1,e2) & on(e2,x3) & n_table(x3) & Actor(e2,x1) & v_sit(e2) & around(e1,x2) & n_guy(x2) & Actor(e1,x1) & v_gather(e1) & n_people(x1))
exists e1 x1 x2.(n_man(x1) & Theme(e1,x2) & Actor(e1,x1) & v_ride(e1) & n_unicycle(x2))