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diff --git a/prolog/problems/sorting/quick_sort_2/en.py b/prolog/problems/sorting/quick_sort_2/en.py
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+++ b/prolog/problems/sorting/quick_sort_2/en.py
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+id = 125
+name = 'quick_sort/2'
+slug = 'sort a list using quicksort'
+
+description = '''\
+<p><code>quick_sort(L, SL)</code>: the list <code>SL</code> contains the elements of <code>L</code> sorted in non-decreasing order. Use the predicate <code>pivoting/4</code> to implement quicksort.</p>
+<pre>
+  ?- quick_sort([2,3,1,5,4], L).
+    L = [1,2,3,4,5].
+</pre>'''
+
+hint = {}