/usr/share/ada/ is in libxmlada-sax6-dev 4.5.2015-8+b2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/ada/adainclude/
/usr/share/ada/adainclude/xmlada_sax/
/usr/share/ada/adainclude/xmlada_sax.gpr
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/usr/share/ada/adainclude/xmlada_sax/sax-state_machines.adb
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/usr/share/ada/adainclude/xmlada_sax/sax-utils.adb
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/usr/share/ada/adainclude/xmlada_sax/sax.ads