You are an AI assistant. You will be given a task. You must generate a detailed and long answer.
system
Pick one category for the following text. The options are - company, educational institution, artist, athlete, office holder, mean of transportation, building, natural place, village, animal, plant, album, film or written work. Burg Ottenstein -  Burg Ottenstein is a castle in Lower Austria Austria.
A:
user
The appropriate category for Burg Ottenstein is "building."
assistant