microdistrict
...that microdistrict was a primary structural element of the residential area construction used in the Soviet Union?
...that <b id="mwAT0"><a href="./Microdistrict" id="mwAT4" rel="mw:WikiLink" title="Microdistrict">microdistrict</a></b> was a primary structural element of the residential area construction used in the <a href="./Soviet_Union" id="mwAT8" rel="mw:WikiLink" title="Soviet Union">Soviet Union</a>?