Paragraph 1 gives the right to tax income from immovable property to the State of source, that is, the State in which the property producing such income is situated. This is due to the fact that there is always a very close economic connection between the source of this income and the State of source. Although income from agriculture or forestry is included in Article 6, Contracting States are free to agree in their bilateral conventions to treat such income under Article 7. Article 6 deals only with income which a resident of a Contracting State derives from immovable property situated in the other Contracting State. It does not, therefore, apply to income from immovable property situated in the Contracting State of which the recipient is a resident within the meaning of Article 4 or situated in a third State; the provisions of paragraph 1 of Article 21 shall apply to such income.