++++ 1 . Tax provisions - Harmonization of laws - Turnover taxes - Common system of value added tax - Economic activities within the meaning of Article 4 of the Sixth Directive - Grant of a building right over immovable property ( Council Directive 77/388, Art . 4(2 ) ) 2 . Tax provisions - Harmonization of laws - Turnover taxes - Common system of value added tax - Supply of goods - Transfer of the right to dispose of tangible property - Creation of a right in rem giving the holder thereof a right of user over immovable property in a Member State which deems such a right to be tangible property - Inclusion ( Council Directive 77/388, Arts 5(1 ) and ( 3)(b ) ) 3 . Tax provisions - Harmonization of laws - Turnover taxes - Common system of value added tax - Taxable persons - Concept - Exhaustive definition contained in Article 4 of the Sixth Directive - Exercise by a Member State of the option mentioned in Article 5(3 ) - No effect ( Council Directive 77/388, Arts 4 and 5(3)(b ) )