Modifies provisions relating to property tax assessments

The provided context does not include specific details about SJR 70's provisions, mechanisms, or affected parties beyond its title and abstract. Without additional information on what aspects of property tax assessments are being modified, a substantive summary cannot be created. The abstract merely states it "modifies provisions relating to property tax assessments" without describing changes. Therefore, a factual summary meeting all requested criteria cannot be generated from the available information.