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diff --git a/prolog/problems/sets/count_3/en.py b/prolog/problems/sets/count_3/en.py
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+++ b/prolog/problems/sets/count_3/en.py
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+name = 'count/3'
+slug = 'find the number of occurrences of an element in list'
+
+description = '''\
+<p><code>count(X, L, N)</code>: <code>N</code> is the number of times the element <code>X</code> appears in the list <code>L</code>.</p>
+<pre>
+?- count(1, [1,2,1,3,1], N).
+  N = 3.
+</pre>'''
+
+hint = {}