yap (yet another prolog ) ubuntu package

[Kjetil brinchmann Halvorsen]

Well, the question is maybe more general. There seems to be something
I do not understand
about the ubuntu packaging system.

I installed (using synaptic) the package
yap 5.1.3-4     The YAP-yet another prolog system.

Writing at the command line I get

kjetil at kjetil-laptop:~$ yap
% Restoring file /usr/lib/Yap/startup
YAP version Yap-5.1.3

but the command
  find /usr/bin yap
returns
find: `yap': No such file or directory

although synaptic   --- propoerties --- installed files
have /usr/bin/yap

I do not understand this! Where is yap?

(I need this to tell emacs where it is)

Kjetil



--
"If you want a picture of the future - imagine a boot stamping on the
human face - forever."

George Orwell (1984)