Income from Immovable Property
(1) Income from immovable property may be taxed in the Contracting State in which such property is situated.
(2) The term "immovable property" shall be defined in accordance with the law of the Contracting State in which the property in question is situated; ships, boats and aircraft shall not be regarded as immovable property.
(3) The provisions of paragraph (1) of this Article shall apply to income derived from the direct use, letting, or use in any other form of immovable property.
(4) The provisions of paragraphs (1) and (3) of this Article shall also apply to the income from immovable property of an enterprise and to income from immovable property used for the performance of professional services.