People stroll outdoors at the airport.
People are waiting at the ferry port.
One cannot be on a stroll at the airport and waiting at the ferry port simultaneously.
exists e1 x1 x2 x3.(n_airport(x3) & at(e1,x3) & Theme(e1,x2) & Actor(e1,x1) & v_stroll(e1) & n_outdoors(x2) & n_people(x1))
exists e1 x1 x2 x3.(n_port(x2) & of(x2,x3) & n_ferry(x3) & at(e1,x2) & Actor(e1,x1) & v_wait(e1) & n_people(x1))