"Das Personal dieser Häuser entspricht der Einrichtung."
This sentence is not at all unusual if you have just been watching Disney's Beauty And The Beast.
Just the meaning of the sentence is weird - or I just don't under. How can people correspond to furnishings - doe they wear clothes that match the upholstery?
In Germany it is very common to employ people simply on the basis of their resemblance to beloved chairs, picture frames etc. My uncle Hans worked for years as a "stool-alike".
I might be wrong but "The staff in these houses matches the furnishings." isn't the genetive case whereas the German sentence is, so it shouldn't be accepted as an answer. Being "in" something doesn't imply belonging.
The level of this whole level seems wrong (like the meaning of many sentences in the exercises)
Maybe "Einrichtung" is rather meant like "institution", instead of "furnishings"? For example if it's a very reknown, noble location and the staff is very well-mannered and well-dressed? I don't know about the furnishings... maybe the uniforms match the color of the carpets?! ;)