Hamdi Kayapınar
... that the first victim of the Turkish serial killer Hamdi Kayapınar was his sibling?
... that the first victim of the Turkish <a href="./Serial_killer" id="mwBE0" rel="mw:WikiLink" title="Serial killer">serial killer</a> <b id="mwBE4"><a href="./Hamdi_Kayapınar" id="mwBE8" rel="mw:WikiLink" title="Hamdi Kayapınar">Hamdi Kayapınar</a></b> was his sibling?