Accommodation for the comedians is not structurally secure (5,2,5)

I believe the answer is:

house of cards

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'accommodation' is the definition.
The answer and definition can be both man-made objects as well as being singular nouns.
Perhaps they are linked in a way I don't understand?

I can't explain the rest of the clue.

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(Other definitions for house of cards that I've seen before include "building that might fall over" , "Unstable scheme" , "Flimsy structure" .)

I've seen this clue in the Irish Times.

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