From 138610b0709d6e251c16b391242023eec393d775 Mon Sep 17 00:00:00 2001
From: Timotej Lazar <timotej.lazar@fri.uni-lj.si>
Date: Mon, 15 Feb 2016 20:17:49 +0100
Subject: Prolog: add a graph of family relations

---
 prolog/problems/family_relations/sister_2/sl.py | 12 ++++++++----
 1 file changed, 8 insertions(+), 4 deletions(-)

(limited to 'prolog/problems/family_relations/sister_2')

diff --git a/prolog/problems/family_relations/sister_2/sl.py b/prolog/problems/family_relations/sister_2/sl.py
index 92ea45d..6c36bce 100644
--- a/prolog/problems/family_relations/sister_2/sl.py
+++ b/prolog/problems/family_relations/sister_2/sl.py
@@ -4,11 +4,15 @@ name = 'sister/2'
 slug = 'X je sestra od Y'
 
 description = '''\
-<p><code>sister(?X, ?Y)</code>: <code>X</code> je sestra od <code>Y</code>.</p>
+<p><code>sister(?X, ?Y)</code>: <code>X</code> je sestra od <code>Y</code>. Primer:</p>
 <pre>
-?- sister(vanessa, X).
-  X = patricia.
-</pre>'''
+?- sister(vanessa, Y).
+  Y = patricia.
+</pre>
+<p><a target="_blank" href="[%@resource famrel.svg%]">Družinska drevesa</a> so
+podana s predikati <code>parent/2</code>, <code>male/1</code> in
+<code>female/1</code>.</p>
+'''
 
 plan = [
     '''\
-- 
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