Indicates a specific <a class="localLink" href="/CivicStructure">CivicStructure</a> or <a class="localLink" href="/LocalBusiness">LocalBusiness</a> associated with the SpecialAnnouncement. For example, a specific testing facility or business with special opening hours. For a larger geographic region like a quarantine of an entire region, use <a class="localLink" href="/spatialCoverage">spatialCoverage</a>.