NYPD policemen watch the crowd at a boardwalk.
Policemen eat donuts in the coffee shop.
Policemen are either at the boardwalk or at the coffee shop, not both.
exists e1 x1 x2 x3 x4.(n_crowd(x3) & at(e1,x4) & n_boardwalk(x4) & Theme(e1,x3) & Actor(e1,x1) & v_watch(e1) & n_policeman(x1) & (x1 = x2) & ne_org_nypd(x2))
exists e1 x1 x2 x3 x4.(n_shop(x3) & of(x3,x4) & n_coffee(x4) & in(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_eat(e1) & n_donut(x2) & n_policeman(x1))