1.   A Smithfield is a leggy type of collie of the sort that bullock drovers used when working cattle half a century ago.

2.   After all, he was supposed to have been hanged half a century ago.

3.   Half a century ago, the whole country was alive with rumours of invasion.

4.   Half a century later he has finally avenged that defeat.

5.   His strong hand ended the furious civil wars and brought about the Pax Augusta, which lasted for nearly half a century.

6.   In a strongly competitive industry, high levels of skill and technology brought success for over half a century.

7.   R-A-F Hullavington has been putting into practice its motto - Service To Many - for more than half a century.

8.   Research on natural hazards has a long tradition in geography going back more than half a century.

9.   The painting, which has been missing for almost half a century, only turned up when the owner of the house died.