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+name = 'last_elem/2'
+slug = 'find last element in list'
+
+description = '''\
+<p><code>last_elem(L, E)</code>: <code>E</code> is the last element of list <code>L</code>.</p>
+<pre>
+?- last_elem([1,2,3], X).
+ X = 3.
+?- last_elem([3,2,X], 1).
+ X = 1.
+</pre>'''
+
+hint = {}