/usr/share/ is in gnat-5 5.3.1-14ubuntu2.
This file is owned by root:root, with mode 0o755.
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/usr/share/doc/gcc-5-base/
/usr/share/doc/gcc-5-base/ada/
/usr/share/doc/gcc-5-base/ada/ChangeLog.gz
/usr/share/man/
/usr/share/man/man1/
/usr/share/man/man1/gnat-5.1.gz
/usr/share/man/man1/gnatchop.1.gz
/usr/share/man/man1/gnathtml-5.1.gz
/usr/share/man/man1/gnatclean.1.gz
/usr/share/man/man1/gnathtml.1.gz
/usr/share/man/man1/gnatlink.1.gz
/usr/share/ada/
/usr/share/ada/debian_packaging-5.mk
/usr/share/doc/
/usr/share/doc/gnat-5
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/usr/share/man/man1/x86_64-linux-gnu-gnat-5.1.gz
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/usr/share/man/man1/x86_64-linux-gnu-gnatbind.1.gz
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/usr/share/man/man1/gnatbind-5.1.gz
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/usr/share/man/man1/gnatprep.1.gz