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Definition: A predicate is a property that is affirmed or denied about the subject (in logic, we say “variable” or “argument”) of a statement.
A. The movie won the Academy award for the past three years is a predicate logic. The domain of discourse here is all movies.
B. 1+3=4 is not a predicate logic. This is because there is no variable or property that is been affirmed or denied according to the definition of predicate. It is just a statement.
C. (x+2)2 is a prime number is a predicate logic and the domain of discourse here is the set of numbers