Use "declarative sentence" in a sentence

1. If the first Bulleted item is a declarative sentence in the present tense, the rest should also be declarative sentences in the present tense

2. In logic, the semantic principle (or law) of Bivalence states that every declarative sentence expressing a proposition (of a theory under inspection) has exactly one truth value, either true or

3. Principle of Bivalence: In logic, the semantic principle (or law) of Bivalence states that every declarative sentence expressing a proposition (of a theory under inspection) has exactly one truth value, either true or false