Change both the quality and the quantity of the following categorical propositions:

1. All oil spills are events catastrophic to the environment.

2. No alcoholics are people with a healthy diet.

3. Some Mexican vacations are episodes that end with gastrointestinal distress.

4. Some corporate lawyers are not people with a social conscience.

5. All coalfired electric plants are major sources of pollution.

6. No fashion shows are celebrations of normal clothing.

7. Some economic forums are venues for airing financial fears.

8. Some paparazzi are not welcome guests at celebrity functions.