A in a state court in Minnesota to recover possession of both parcels of land. A appears, claiming to own both parcels by virtue of the Minnesota court's default judgment. B asserts that the Minnesota court lacked personal jurisdiction over B and thus execution of its default judgment deprived B of her property without due process of law. A attaches B's land, publishing notice in a Minnesota newspaper. A then sues B on the claim in a state court in North Dakota.
B appears and asserts a good defense to the claim.
B obtains a judgment that she owes A nothing. A in a state court in Minnesota to recover possession of the land. A appears and defends.