prolog/problems/family_relations/brother_2/en.py


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# coding=utf-8

id = 97
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 = {}