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 = {}