/usr/lib/x86_64-linux-gnu/ada/ is in libxmlada-dom7-dev 17.1.2017-5.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/ada/adalib/
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_dom/
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_dom/dom-core-attrs.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_dom/dom-core-character_datas.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_dom/dom-core-document_types.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_dom/dom-core-documents.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_dom/dom-core-elements.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_dom/dom-core-nodes.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_dom/dom-core-notations.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_dom/dom-core-texts.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_dom/dom-core.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_dom/dom-readers.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlada_dom/dom.ali