11.   The poem provided the basis for an interesting class discussion.

12.   The present convention is long established and provides a basis on which we can stand.

13.   The video will provide a basis for class discussion.

14.   These two dimensions provided the basis for the first coherent theories about the connections between the peoples of the world.

15.   They provide a basis for evaluating shorter-term budgets and prevent long-term aims from being forced aside by short-term operational needs.

16.   This difference provides a basis for selection among classes.

17.   This phenomenon provides the basis for flame emission photometry.

18.   Will these policies provide a basis for sustained recovery and sustained growth?

19.   The purpose of the PST is to provide a basis from which calculations, plans and actions can be generated to aid manufacture of a product.