Pronouns themselves are easy to capture, but pronouns are actually not skills. Pronouns with verbs become a skill. Oracle itself is not a skill. Oracle administration, oracle development, oracle support, selling oracle, providing training in oracle are skills. This is the problem of issues with verbs (stated above) coming into play.
In areas where nouns and pronouns are less relevant as in IT, for example, and where verbs are more common like in management, parsing faces even higher difficulty.