21.   There is a dispute over land but we believe we have found a workable solution to this problem.

22.   There used to be a lot of disputes over land boundaries but nowadays such problems scarcely ever arise.

23.   To deal with disputes over such matters, regional health authorities will act as conciliators.

24.   French air traffic controllers have begun a three-day strike in a dispute over pay.

25.   The two countries are in dispute over the boundaries of their coastal waters.

26.   The postponement was due to a dispute over where the talks should be held.

27.   Served as the unofficial referee in disputes over the family business.

28.   Most roommate conflicts spring from such small, irritating differences rather than from grand disputes over abstract philosophical principles.