Cathedral of the Immaculate Conception of the Holy Virgin Mary
... that the Cathedral of the Immaculate Conception of the Holy Virgin Mary is the largest Catholic church in Russia?
... that the <b id="mwCSA"><a class="mw-redirect" href="./Cathedral_of_the_Immaculate_Conception_of_the_Holy_Virgin_Mary" id="mwCSE" rel="mw:WikiLink" title="Cathedral of the Immaculate Conception of the Holy Virgin Mary">Cathedral of the Immaculate Conception of the Holy Virgin Mary</a></b> <i id="mwCSI">(pictured)</i> is the largest <a href="./Catholic_Church" id="mwCSM" rel="mw:WikiLink" title="Catholic Church">Catholic</a> church in Russia?