<a href="https://en.wikipedia.org/wiki/de:Joachim_Gauck" class="extiw" title="w:de:Joachim Gauck">Joachim Gauck</a> im <a href="https://en.wikipedia.org/wiki/de:Hasso_Plattner" class="extiw" title="w:de:Hasso Plattner">Hasso-Plattner-Institut</a>
Sebastian Hillig
CC BY 2.0
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