was held
... that a consultative referendum on whether Ukraine should federalise was held in the Donbass region during the 1994 parliamentary election, twenty years prior to the disputed 2014 status referendums in the same region?
... that a consultative referendum on whether <a href="./Ukraine" id="mwCIE" rel="mw:WikiLink" title="Ukraine">Ukraine</a> should federalise <b id="mwCII"><a href="./Historical_background_of_the_2014_pro-Russian_unrest_in_Ukraine#Donbass" id="mwCIM" rel="mw:WikiLink" title="Historical background of the 2014 pro-Russian unrest in Ukraine">was held</a></b> in the <a class="mw-redirect" href="./Donets_Basin" id="mwCIQ" rel="mw:WikiLink" title="Donets Basin">Donbass region</a> during the <a class="mw-redirect" href="./Ukrainian_parliamentary_election,_1994" id="mwCIU" rel="mw:WikiLink" title="Ukrainian parliamentary election, 1994">1994 parliamentary election</a>, twenty years prior to the <a class="mw-redirect" href="./Donbass_status_referendums,_2014" id="mwCIY" rel="mw:WikiLink" title="Donbass status referendums, 2014">disputed 2014 status referendums</a> in the same region?