76 Syllogisms: Deductive reasoning based on the conclusion that a new property judgment containing two common terms as a premise is deductive reasoning. Deductive reasoning is the reasoning of a particular conclusion derived from a common premise. According to the above definitions, Which of the following are syllogisms:. ['All metals are insoluble in water, chromium is a metal, so chromium is insoluble in water.', 'All sparrows have feathers, all pigeons have feathers, so all birds have feathers.', 'A is not a criminal, B is not a criminal, so A and B are not criminals.', 'Zhou Enlai is a great politician, Zhou Enlai is a great politician, so Zhou Enlai is a great politician and military.']