A

At the end of this sentence I will type the letter A.
This time, I will not type the letter A when I get to the end of this sentence, I will copy the first A and paste it in here: A.
Now I will use the same A again - it's still on the clipboard so I will paste it here: A.
At the end of this sentence I will type the letter A.
That last sentence was actually copied from the first sentence and pasted in above, so it's not true to say that I typed the letter A that time. So the sentence above is false, but the first sentence was true. The two sentences contain the same words but one is true and the other is false.