Parsing english is an interesting node about this, I think that my response there may still be useful.

It is not a bad idea to try to solve this type of problem. You can't help but learn from it, and it is interesting. The degree of difficulty depends on the size of the domain that you cover.

As I've said before, don't be discouraged by a lack of reported successes in this area. Much of the work is outside of public view.

I think Perl is a reasonable language choice for AI. It is commonly used by PhD-AI-researchers in their posh industrial research labs.