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diff --git a/prolog/problems/sorting/isort_2/en.py b/prolog/problems/sorting/isort_2/en.py
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+id = 123
+name = 'isort/2'
+slug = 'sort a list using insertion sort'
+
+description = '''\
+<p><code>isort(L, SL)</code>: the list <code>SL</code> contains the elements of <code>L</code> sorted in non-decreasing order. Use the predicate <code>sins/3</code> to implement insertion sort.</p>
+<pre>
+  ?- isort([2,3,1,5,4], L).
+    L = [1,2,3,4,5].
+</pre>'''
+
+hint = {}