BEST Formula For Meta Keywords???

I need a formula for excel that takes all the words that are in a specified cell, finds the most important words in that paragraph and puts it in a diffrent cell, making them comma delimited. I have been playing with some formulas in excel and I can't find the right one to do this. If anyone has any ideas for a solution, it would be GREAT! :D

Sample of what I need it to do:

Description

One day there were three cats. A white cat, a black cat, and a brown cat. The white cat said "I'm bored. I don't have anyone to play with." The black cat said "I'm bored. I don't have anyone to play with." The brown cat said "I'm bored. I don't have anyone to play with." So they decided to meet at the park. When they got there, they didn't know what to do. The brown cat wanted to roll in the mud, but the black cat wanted to roll in some coal, but the white cat wanted to chase birds. So they had to agree on something. So they agreed to go for a walk. On their way walk they saw a man fixing the phone wires, a man fixing the road, and a man painting his house green. So they stopped walking and started watching him. When he went in to have lunch they knocked over all the paint right on them.

Keywords

cats, fixing, mud, coal, birds, man, phone, road, house, lunch, paint

Oh and it cant be more then 11 keywords!

Well I felt that those were the keywords relevant to the story. And okay, where would I turn to tackle such a problem, if its not doable. Maybe Microsoft word has such a feature?

Originally Posted by shg

There is no such feature in any program I know of. Well, maybe Watson could do it, but I don't know if its sense of relevance would agree with yours.

Are you saying there is no way to automatically generate a meta description or meta keywords of some kind of document?

Originally Posted by shg

No, I'm saying no tool I know of does it, whatever "it" is. There are many tools I know nothing about.

I don't understand your use of "meta" -- it's not data about the data, it's portions of the data (nouns) that you appear to be trying to extract.

I'm talking about meta keywords, meta description. Like the ones that SE's use to optimize if your website is suited to be a certain web rank. I just have many different descriptions and I need a formula to find those meta keywords and/or to generate a meta description from the description provided.