one of the most notorious places of mass executions
... that a forest glade near Palmiry became "one of the most notorious places of mass executions" in Poland after Nazi war crimes were committed there?
... that a forest glade near <a href="./Palmiry" id="mwAqA" rel="mw:WikiLink" title="Palmiry">Palmiry</a> became "<b id="mwAqE"><a href="./Palmiry_massacre" id="mwAqI" rel="mw:WikiLink" title="Palmiry massacre">one of the most notorious places of mass executions</a></b>" in Poland after <a href="./Nazi_crimes_against_the_Polish_nation" id="mwAqM" rel="mw:WikiLink" title="Nazi crimes against the Polish nation">Nazi war crimes</a> were committed there?