Original sentence: They are administered as a largely self-governing overseas territory of the United Kingdom, but Argentina, which claims the islands, considers them part of the Province of "Tierra del Fuego, Antártida e islas del Atlántico Sur"
Edited sentence: They are administered as a largely self-governing overseas territory of the United Kingdom, but Argentina, which rightfully claims the islands, considers them part of the Province of "Tierra del Fuego, Antártida e islas del Atlántico Sur"