Complex sentence exploration : relative clauses

All of the following sentences were given to me as examples of relative clauses.  Leave a comment if you think any of them DO NOT contain a relative clause:

1. The importance of information technology (IT), especially of the World Wide Web, in tourism has increased tremendously over the past years.
2. The former wanted the convention amended to oblige states to submit nomination lists containing candidates from both sexes.
3. Each Convention Party nominates three candidates, whom it considers satisfy the criteria for office laid down by Article 21 of the Convention.
4. What is new is the accelerating speed with which it occurs and the growing outreach of its implications.
5. The information from the contracting parties disclosed that only three had legislation requiring egalitarian representation of both sexes in their highest courts.
6. Each Convention Party nominates three candidates, whom it considers satisfy the criteria for office laid down by Article 21 of the Convention.
7. They are only true about the teachers I have interviewed and the high school classes I have observed.