Determine whether the following dispute is verbal, factual, or some combination of the two. If verbal, discuss whether the dispute arises from vagueness or ambiguity.
LESLIE: Your friend Paul told us that he would be visiting his parents in Knoxville this weekend. Therefore, he must not be at home.
DIANA: I agree that Paul is probably not at home, but you didn't hear him right. He said that his parents live in Nashville.