1.   They used explosives to blow the door off the front of the building.?

2.   Confidential data contain material that is secret but whose existence is not a secret.

3.   If the second edition of a book contains revision material, it is the first revised edition.

4.   Materials Oriental rugs always use natural fibres, and any rug containing synthetic material will invariably have been machine made.

5.   May contain some material parents consider inappropriate for young children.

6.   The child-use section contains instructional materials in a wide variety of format and subject matter for the children themselves.

7.   The old county histories contain interesting material, sometimes with plans and drawings not easily obtainable elsewhere.

8.   This film contains material unsuitable for minors.

9.   The librarian pointed out that many of the books that contain material that was once offensive to the Mrs. Grundys of the world are now revered as literary classics.