I want to know the answer to the following question:
What was the name of the corporation that looked over common task?
All the background I'm provided with is that "The provincial diet of East Prussia elected a provincial executive body (government), the provincial committee (Provinzialausschuss), and a head of province, the Landeshauptmann ("Land Captain"; till the 1880s titled Landdirektor, land director).". Is that enough to answer the question?