(2) Exemptions granted pursuant to this subparagraph (a) may only be revoked by a referendum election called and conducted as provided by law. The call for such referendum shall not be issued within five years from the date such exemptions were first granted and, if the results of the election are in favor of the revocation of such exemptions, then such revocation shall be effective only at the end of a five- year period from the date of such referendum.
(3) The implementation, administration, and revocation of the exemptions authorized in this subparagraph (a) shall be provided for by law. Until otherwise provided by law, the grant of the exemption shall be subject to the same conditions, limitations, definitions, and procedures provided for the grant of such exemption in the Constitution of 1976 on June 30, 1983.
