er">6378137.0</span><span class="special">,</span> <span class="number">6356752.3142451793</span><span class="special">);</span>
    <span class="identifier">bg</span><span class="special">::</span><span class="identifier">strategy</span><span class="special">::</span><span class="identifier">distance</span><span class="special">::</span><span class="identifier">geographic</span><span class="special">&lt;&gt;</span> <span class="identifier">strategy</span><span class="special">(</span><span class="identifie