leaves on railroad tracks
...that in the United Kingdom alone, over £60 million is spent annually on dealing with the effects of leaves on railroad tracks?
...that in the <a href="./United_Kingdom" id="mwAgg" rel="mw:WikiLink" title="United Kingdom">United Kingdom</a> alone, over <a href="./Pound_sterling" id="mwAgk" rel="mw:WikiLink" title="Pound sterling">£</a>60 million is spent annually on dealing with the effects of <b id="mwAgo"><a href="./Slippery_rail" id="mwAgs" rel="mw:WikiLink" title="Slippery rail">leaves on railroad tracks</a></b>?