></span></span>
<span class="r-in"><span><span class="va">x</span> <span class="op">=</span> <span class="va">towns</span></span></span>
<span class="r-in"><span></span></span>
<span class="r-in"><span><span class="co"># Query 1: Buffer</span></span></span>
<span class="r-in"><span><span class="va">query</span> <span class="op">=</span> <span class="st">"SELECT ST_Buffer(geom, 0.1, 'quad_segs=2') AS geom FROM x LIMIT 5;"</span></span></span>
<span class="r-in"><span><span class="fu">st_postgis</span><span c