21.   Einstein was awarded the Nobel prize for his contribution to quantum theory.

22.   Even so their contribution to the mechanisms whereby the new images were translated from theory to practice needs to be recognized.

23.   Everyone ignored my sole contribution to the conversation.

24.   Everyone in the organization can therefore seek out and seize initiatives to improve their contribution to profit.

25.   Few have been more anxious to be remembered for having made important contributions to the greatness of the nation.

26.   Firstly, professionals make important contributions to the well-being of society as a whole.

27.   Following the work of Rawls, however, there has been a profusion of important contributions to liberal political philosophy.

28.   Foreign aid has actually made a larger contribution to the national economy than foreign investment in the past five years.

29.   Garden Life could turn out to be the most valuable contribution to conservation we have seen for some time.