ass="op">)</span></span></span>
<span class="r-out co"><span class="r-pr">#&gt;</span> key:         gsed2406 </span>
<span class="r-out co"><span class="r-pr">#&gt;</span> population:  france </span>
<span class="r-wrn co"><span class="r-pr">#&gt;</span> <span class="warning">Warning: </span>Reference 'france' for key 'gsed2406' not found. Using default.</span>
<span class="r-in"><span><span class="fu"><a href="https://rdrr.io/r/base/nrow.html" class="external-link">nrow</a></span><span class="op">(</span><