a fire
... that a fire in Christiania in 1858 left about 1,000 people homeless?
... that <b id="mwAoQ"><a href="./1858_Christiania_fire" id="mwAoU" rel="mw:WikiLink" title="1858 Christiania fire">a fire</a></b> in <a href="./Oslo" id="mwAoY" rel="mw:WikiLink" title="Oslo">Christiania</a> in 1858 left about 1,000 people homeless?