From 4fd77108854d7e83ce2d7135ed02b65ba73fc9e9 Mon Sep 17 00:00:00 2001
From: Aleksander Sadikov <aleksander.sadikov@fri.uni-lj.si>
Date: Wed, 9 Mar 2016 20:09:26 +0100
Subject: Hints for del/3 updated.

---
 prolog/problems/lists/del_3/common.py | 2 +-
 prolog/problems/lists/del_3/sl.py     | 4 ++--
 2 files changed, 3 insertions(+), 3 deletions(-)

diff --git a/prolog/problems/lists/del_3/common.py b/prolog/problems/lists/del_3/common.py
index c984fef..125ece1 100644
--- a/prolog/problems/lists/del_3/common.py
+++ b/prolog/problems/lists/del_3/common.py
@@ -84,7 +84,7 @@ def hint(code, aux_code):
             return [{'id': 'del_from_empty_list_success'}]
 
         # missing/failed base case
-        if not prolog.engine.ask_truthTO(engine_id, 'del(qQ, [qQ,qa,qb,qc], [qa,qb,qc])'):
+        if not prolog.engine.ask_one(engine_id, 'del(qQ, [qQ,qa,qb,qc], [qa,qb,qc])'):
             return [{'id': 'base_case'}]
 
         # target predicate seems to always be false
diff --git a/prolog/problems/lists/del_3/sl.py b/prolog/problems/lists/del_3/sl.py
index 0875fe0..ce82732 100644
--- a/prolog/problems/lists/del_3/sl.py
+++ b/prolog/problems/lists/del_3/sl.py
@@ -76,8 +76,8 @@ saj veš, da z največjim veseljem reče "no"! :)</p>
     'lost_heads': '''\
 <p>Element je zbrisan, ampak prav tako so tudi vsi elementi pred njim, kajne?
 Si pozabil dati glavo nazaj na začetek seznama, ko se vračaš iz rekurzije?</p>
-<p>Poskusi postaviti naslednje vprašanje prologu:
-<code>?- del(d, [a,b,c,d,e,f,g], L).</code></p>
+<p>Poskusi postaviti naslednje vprašanje prologu:</p>
+<p><code>?- del(d, [a,b,c,d,e,f,g], L).</code></p>
 ''',
 
     'final_hint': '''\
-- 
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