an></span>
<span class="r-in"><span> <span class="st">"Survey"</span><span class="op">)</span>,</span></span>
<span class="r-in"><span> entity_class <span class="op">=</span> <span class="fu"><a href="https://rdrr.io/r/base/c.html" class="external-link">c</a></span><span class="op">(</span><span class="st">"Island"</span>, <span class="st">"Island/Mainland"</span>, <span class="st">"Mainland"</span>, <span class="st">"Island Group"</span>,</span></span>
<span class="r-in"><span> <span class="st">"Island 