Naval Cathedral in Kronstadt
... that the Naval Cathedral in Kronstadt, completed in 1913, was equipped with a centralised vacuum cleaning system?
... that the <b id="mwDEE"><a class="mw-redirect" href="./Naval_Cathedral_in_Kronstadt" id="mwDEI" rel="mw:WikiLink" title="Naval Cathedral in Kronstadt">Naval Cathedral in Kronstadt</a></b>, completed in 1913, was equipped with a centralised <a href="./Vacuum_cleaner" id="mwDEM" rel="mw:WikiLink" title="Vacuum cleaner">vacuum cleaning</a> system?