h this
            predicate query returns indexed Values that intersect passed Geometry.
            Value is returned by the query if <code class="literal"><code class="computeroutput"><span class="identifier">bg</span><span class="special">::</span><span class="identifier">intersects</span><span class="special">(</span><span class="identifier">Indexable</span><span class="special">,</span> <span class="identifier">Geometry</span><span class="special">)</span></code></code> returns <code class="literal"><