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diff --git a/prolog/problems/sets/subset_2/en.py b/prolog/problems/sets/subset_2/en.py
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+++ b/prolog/problems/sets/subset_2/en.py
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+id = 133
+name = 'subset/2'
+slug = 'generate all subsets of a set'
+
+description = '''\
+<p><code>subset(Set, Subset)</code>: the set <code>Subset</code> is a subset of <code>Set</code>. This predicate should generate all valid solutions, one by one.</p>
+<pre>
+  ?- subset([1,2,3], SS).
+    SS = [1,2,3] ;
+    SS = [1,2] ;
+    SS = [1,3] ;
+    SS = [1] ;
+    SS = [2,3] ;
+    SS = [2] ;
+    SS = [3] ;
+    SS = [].
+</pre>'''
+
+hint = {}