From 2e900dd0317299294f4cb27213be6f5b36d4b8b8 Mon Sep 17 00:00:00 2001
From: Timotej Lazar <timotej.lazar@fri.uni-lj.si>
Date: Wed, 13 Jan 2016 16:35:48 +0100
Subject: Use argument mode indicators in Prolog problem descriptions

---
 prolog/problems/family_relations/ancestor_2/en.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'prolog/problems/family_relations/ancestor_2/en.py')

diff --git a/prolog/problems/family_relations/ancestor_2/en.py b/prolog/problems/family_relations/ancestor_2/en.py
index 588de83..f4db6ef 100644
--- a/prolog/problems/family_relations/ancestor_2/en.py
+++ b/prolog/problems/family_relations/ancestor_2/en.py
@@ -4,7 +4,7 @@ name = 'ancestor/2'
 slug = 'the ancestor relation'
 
 description = '''\
-<p><code>ancestor(X, Y)</code>: <code>X</code> is an ancestor (parent, grandparent,...) of <code>Y</code>.</p>
+<p><code>ancestor(?X, ?Y)</code>: <code>X</code> is an ancestor (parent, grandparent, …) of <code>Y</code>.</p>
 <pre>
 ?- ancestor(patricia, X).
   X = john ;
-- 
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