Must Articles 184 to 186 of Council Directive 2006/112/EC (1) of 28 November 2006 on the common system of value added tax be interpreted as meaning that, in circumstances such as those at issue in the main proceedings, the deduction adjustment mechanism provided for in Directive 2006/112 is not applicable in cases where an initial deduction of value added tax (VAT) could not have been made at all because the transaction in question was an exempt transaction relating to the supply of land?