Prolog: update denotational_semantics problems

1 files changed, 10 insertions, 2 deletions

diff --git a/prolog/problems/denotational_semantics/prog_listswap_2/en.py b/prolog/problems/denotational_semantics/prog_listswap_2/en.py
index ad0e9b1..89907bd 100644
--- a/prolog/problems/denotational_semantics/prog_listswap_2/en.py
+++ b/prolog/problems/denotational_semantics/prog_listswap_2/en.py
@@ -2,9 +2,17 @@ name = 'prog_listswap/2'
 slug = 'list-manipulation language'
 
 description = '''\
-<p>Write a DCG for manipulating list elements. The first symbol in every word is <code>[begin]</code>, followed by any sequence of "instruction" symbols from the set {<code>left</code>, <code>right</code>, <code>swap</code>}, and finally <code>[end]</code>. The starting symbol should be named <code>prog_listswap</code>.</p>
+<p>
+Write a DCG for manipulating list elements. The first symbol in every word is
+<code>[begin]</code>, followed by any sequence of "instruction" symbols from
+the set {<code>left</code>, <code>right</code>, <code>swap</code>}, and finally
+<code>[end]</code>. The starting symbol should be named
+<code>prog_listswap</code>.
+</p>
 
-<p>Example words: <code>[begin,right,swap,end]</code>, <code>[begin,right,left,end]</code>.</p>
+<p>
+Example words: <code>[begin,right,swap,end]</code>, <code>[begin,right,left,end]</code>.
+</p>
 '''
 
 hint = {}