tramways in Plymouth
... that the Plymouth, Stonehouse and Devonport Tramway was the only one of three independent tramways in Plymouth to be built to the British standard gauge?
... that the Plymouth, Stonehouse and Devonport Tramway was the only one of three independent <b id="mwDYk"><a href="./Tramways_in_Plymouth" id="mwDYo" rel="mw:WikiLink" title="Tramways in Plymouth">tramways in Plymouth</a></b> to be built to the British <a class="mw-redirect" href="./Standard_gauge" id="mwDYs" rel="mw:WikiLink" title="Standard gauge">standard gauge</a>?