1.   Suppose that the number of firms competing to produce a good in one country is smaller than the number in another.

2.   Although South Africa has many advertising agencies that compete to produce witty poster and magazine ads, the advertising for this election has been stultifyingly dull.

3.   A deregulated wholesale market where private, unregulated suppliers would compete to produce power was supposed to eliminate these inefficiencies.

4.   The worlds of dance and sport can magically come together on the ice rink when top figure skaters compete, producing a fluid choreography of power and grace.