Article 9. In respect to the land of which the land tax is authorized to be abated or exempted for a certain term because of new exploitation, reclamation, cultivation, change in categories, or wastes, by virtue of Art.19, Art.20, Art.36, Art.46, or Art.55 of the Land Tax Law, and the term thereof is not get expired on the enforcement of the present Law, the owner of the land shall, as prescribed by Ordinance, file a return with the Government stating therein necessary matters as may be provided for by Ordinance.