libgnat-5 5.4.0-6ubuntu1~16.04.6 (amd64 binary) in ubuntu xenial

 GNAT is a compiler for the Ada programming language. It produces optimized
 code on platforms supported by the GNU Compiler Collection (GCC).
 .
 The libgnat library provides runtime components needed by most
 applications produced with GNAT.
 .
 This package contains the runtime shared library.