1979 Warsaw gas explosion
... that 49 people died and 135 were injured in the 1979 Warsaw gas explosion?
... that 49 people died and 135 were injured in the <b id="mwDoc"><a href="./1979_Warsaw_gas_explosion" id="mwDog" rel="mw:WikiLink" title="1979 Warsaw gas explosion">1979 Warsaw gas explosion</a></b>?