Upgrade Production Yield on Kill

[Meaniehead]

I know it's possible to upgrade the science, culture, gold or faith yield on a kill. I'm wondering if it's at all possible to upgrade the production yield on a kill too? I know it doesn't make sense without some other parameter (unlike the other yields there is no central repository of production, it all exists within each city), but I'm thinking since production is a yield type it might be possible to define an ability as upgrading the production of your capital. Any ideas?