Of course, but it is not like the mentor that I work day-to-day on the personal basis. Rather, I share with them my work, and they share with me their work. For example, I work for a while very closely with Dankogai-san on previously of, I think, Livedoor Japan on the Perl language, which eventually became the language called Raku, and the code is called Rakuto, which means actually joy or fun.