If successful in completing step 3, it will be shown that the argument form is invalid. All who seek public office are noble. Some who seek public office are not wise persons. So, some wise persons are not noble. All A are B. 2.
All dogs are mammals.
Some dogs are not golden retrievers. So, some golden retrievers are not mammals. Some predestinarians are not fatalists. So, some predestinarians are not determinists. All mammals are animals.