1 files changed, 1 insertions, 1 deletions
diff --git a/mgr.tex b/mgr.tex
index cfb7058..0d536d3 100644
--- a/mgr.tex
+++ b/mgr.tex
@@ -427,7 +427,7 @@ array \indextable.
     range are descendants of $x$, and the values smaller than
     $\prefixtable[\indextable[y]]$ correspond to ancestors of $y$.  In
     particular, the minimum of that range corresponds to the highest ancestor of
-    $y$ that's a descendant of $x$.
+    $y$ that is also a descendant of $x$.
 \end{observation}
 
 In our problem, we only care about ancestors of $y$ that are colored black. So