- Proposition: I own a blue car.
Truth Value: True.
Truth Conditions: For this proposition to be true, I must have legal ownership of a car, and that car must be blue.
Entailment: If it’s true that I own a blue car, it must also be true that “I own a car.”
2. Proposition: I have visited the moon.
Truth Value: False.
Truth Conditions: This would be true if I had physically traveled to and landed on the moon.
Entailment: If it were true that I have visited the moon, it would also be true that “I have traveled in space.”
3. Proposition: There is a hidden city in the Amazon rainforest.
Truth Value: Unknown.
Truth Conditions: For this to be true, there must be an undiscovered city located within the Amazon rainforest.
Entailment: If this proposition were true, it would entail that “There are undiscovered places on Earth.”
