Ruby and Ada do look alike

I once thought ruby is mostly inspired by perl, since Yukihiro Matsumoto mentioned ruby inherited the Perl philosophy. But it is hard to explain where a few "wired" syntax come from (considering my C/C++/C#/Java background), for example:

Ruby          C/C++/C#/Java
---------------------------
begin/end         {}
rescue            try/catch
raise             throw
elsif             else if
case/when         switch/case
nil               NULL/null

Actually it is all from Ada. Definitely this is not a news, I failed to pay enough attention since I know nothing about Ada.

You can check out syntax across languages per category to compare the two.