prolog/problems/family_relations/brother_2/en.py


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name = 'brother/2'
slug = 'the brother relation'

description = '''\
<p><code>brother(X, Y)</code>: <code>X</code> is a brother of <code>Y</code>.</p>
<pre>
?- brother(jeffrey, X).
  X = william ;
  X = sally.
</pre>'''

hint = {}