Sentence one:

• Proposition: I have a cat.
• Truth value: True.
• Truth conditions: For this to be true, I would need a cat to live inside my house.
• Entailment: “I have a cat” entails “I have a pet”.

Sentence two:

• Proposition: I have 34 eyes.
• Truth value: False.
• Truth conditions: I would actually have to have 34 eyes somewhere on my body.
• Entailment: “I have 34 eyes” entails “I have more than two eyes”.

Sentence three:

• Proposition: There is an elephant sized rat wandering in my backyard.
• Truth value: Unknown.
• Truth conditions: For this to be true, there must be a rat the size of an elephant wandering in my backyard.
• Entailment: “There is an elephant sized rat wandering in my backyard” would entail “There is a rodent in my backyard.”