prolog/problems/family_relations/descendant_2/en.py


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# coding=utf-8

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

description = '''\
<p><code>descendant(X, Y)</code>: <code>X</code> is a descendant (child, grandchild,...) of <code>Y</code>.</p>
<pre>
  ?- descendant(patricia, X).
    X = william ;
    X = tina ;
    X = thomas.
</pre>'''

hint = {}