Disjunctive syllogism: it refers to the reasoning that one sentence in the premise is disjunctive judgment, and then deduces the conclusion according to the disjunctive judgment and the relationship between disjunctions.
According to the above definition, disjunctive syllogism includes the statement "Either social existence determines social consciousness, or social consciousness determines social existence. The history of social development has fully proved that it is by no means social consciousness that determines social existence, so it must be social existence that determines social consciousness."