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+id = 103
+name = 'memb/2'
+slug = 'find elements in list'
+
+description = '''\
+<p><code>memb(M, L)</code>: <code>M</code> is an element of list <code>L</code>.</p>
+<pre>
+ ?- memb(X, [1,2,3]).
+ X = 1 ;
+ X = 2 ;
+ X = 3.
+ ?- memb(1, [3,2,X]).
+ X = 1.
+</pre>'''
+
+hint = {}