Changing word inflections This might be an unusual question. I have a situation where I am creating paraphrases with a rule based system. One transformation that I'd like to implement would one that gets rid of light verbs, like so:

a) Steven made an unwilling concession to us.

b) Steven unwillingly conceded to us.

To go from (a) to (b) requires some inflectional changes such as:

unwilling -> unwillingly

concession -> conceded

Is there something out there that can take care of such inflectional changes reliably for a given word? Seems like there should be, but I don't recall seeing anything like this.
Thought I'd share what I found here.

I have not tried any of this yet, but this looks very good, the Automatically Generated Inflection Database (AGID).

There is also the SPECIALIST Lexicon.

And for those using python, there are various modules you can use, such as LemmInflect.