fix reasoning for S44|P86

spaces/S000044/properties/P000086.md

@@ -4,4 +4,5 @@ property: P000086
 value: false
 ---
 
-$1$ is a closed point, but $1/3$ is not.
+$\frac{2}{5}$ belongs to a single closed set $(0,1)$, but
+$\frac{3}{5}$ belongs to two closed sets $(0,1)$ and $[1/2,1)$.