London-class battleship
... that HMS London, a London-class battleship, was fitted with a makeshift ramp for experiments with naval aircraft?
... that <a href="./HMS_London_(1899)" id="mwA2w" rel="mw:WikiLink" title="HMS London (1899)">HMS <i id="mwA20">London</i></a>, a <b id="mwA24"><a href="./London-class_battleship" id="mwA28" rel="mw:WikiLink" title="London-class battleship"><i id="mwA3A">London</i>-class battleship</a></b>, was fitted with a makeshift ramp for experiments with <a href="./Naval_aviation" id="mwA3E" rel="mw:WikiLink" title="Naval aviation">naval aircraft</a>?