a separate party
... that when the Memel Convention came into force in 1925, the local branch of the Social Democratic Party of Germany became a separate party?
... that when the <a class="mw-redirect" href="./Memel_Convention" id="mwArg" rel="mw:WikiLink" title="Memel Convention">Memel Convention</a> came into force in 1925, the local branch of the <a href="./Social_Democratic_Party_of_Germany" id="mwArk" rel="mw:WikiLink" title="Social Democratic Party of Germany">Social Democratic Party of Germany</a> became <b id="mwAro"><a href="./Social_Democratic_Party_of_the_Memel_Territory" id="mwArs" rel="mw:WikiLink" title="Social Democratic Party of the Memel Territory">a separate party</a></b>?