/usr/lib/ is in libxmlezout3-dev 1.06.1-7.
This file is owned by root:root, with mode 0o755.
..
/usr/lib/x86_64-linux-gnu/
/usr/lib/x86_64-linux-gnu/ada/
/usr/lib/x86_64-linux-gnu/ada/adalib/
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlezout/
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlezout/mckae-xml-ez_out-generic_medium.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlezout/mckae.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlezout/mckae-xml.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlezout/mckae-xml-ez_out.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlezout/mckae-xml-ez_out-text_file.ali
/usr/lib/x86_64-linux-gnu/ada/adalib/xmlezout/mckae-xml-ez_out-string_stream.ali
/usr/lib/x86_64-linux-gnu/libxmlezout.a
/usr/lib/x86_64-linux-gnu/libxmlezout.so