1.   Though the orchestra still lacks a substantial endowment, a new fund-raising strategy has proved particularly successful.

2.   And the strategy proved to be a double-winner.

3.   But all these strategies could prove futile because so many high-tech workers view unions as unnecessary.

4.   But his strategy has proven as popular a cause in British Columbia as the restoration of salmon is south of the border.

5.   But that strategy has often proved difficult.

6.   But that strategy has repeatedly proved wrong.

7.   But the strategy has since proved disappointing.

8.   But there were many signs Tuesday that this strategy might not prove possible.

9.   Ellison says the strategy will prove costly and unmanageable for businesses.

10.   For a short while, the strategy proved lucrative.