Determine whether the following disputes are verbal, factual, or some combination of the two. If verbal, discuss whether the dispute arises from vagueness or ambiguity.
CAROL: Nelson could not have fought in the battle of Trafalgar, because that battle occurred in 1806, and Nelson died in 1804.
JUSTIN: Your knowledge of history is atrocious! Nelson did fight in Trafalgar, and the date was October 21, 1805.