DELAG
...that the world's first airline was DELAG, which operated with zeppelin airships?
...that the world's first <a href="./Airline" id="mwCV4" rel="mw:WikiLink" title="Airline">airline</a> was <b id="mwCV8"><a href="./DELAG" id="mwCWA" rel="mw:WikiLink" title="DELAG">DELAG</a></b>, which operated with <a href="./Zeppelin" id="mwCWE" rel="mw:WikiLink" title="Zeppelin">zeppelin</a> airships?