a referendum in the Netherlands
... that the Ukraine–EU Association Agreement will be subjected to a referendum in the Netherlands?
... that the <a class="mw-redirect" href="./Ukraine–European_Union_Association_Agreement" id="mwAS4" rel="mw:WikiLink" title="Ukraine–European Union Association Agreement">Ukraine–EU Association Agreement</a> will be subjected to <b id="mwAS8"><a href="./Referendums_in_the_Netherlands" id="mwATA" rel="mw:WikiLink" title="Referendums in the Netherlands">a referendum in the Netherlands</a></b>?