31.   A Norwegian prisoner proved the value of physical fitness when he ran away from his four prison guards during a jog and escaped.

32.   According to Anderson, that strategy proved its value through a decline in hostage-taking of journalists for political causes.

33.   Both groups may be competing to demonstrate and prove the value of their services.

34.   But Portillo said the Apache has proved its value in service with the U.S. Air Force.

35.   Davis-Besse managers said the emergency proved the value of their frequent accident drills.

36.   He said the claimants must produce sufficient documents needed to prove the value of their damaged properties.

37.   Radek Bejbl, who volleyed home the winner against Italy, has also proven his value in front of goal.

38.   Pushing to prove the value of foreign aid, Bellamy said short-term costs can bring lasting benefits.

39.   So in that sense, the storybook run of the Senegalese proves the value of French domestic soccer after years of dismissing it as mediocre.

40.   South African bowlers proved the value of sustained accuracy and a persistently nagging length.