Sentence 'Every Street that is close to a Fireplace is part of a Fire Danger Area.' is not accepted as a rabbit sentence. However, it feel quite natural and uses rabbit subpatterns like 'Street that is close to a Fireplace', so we should be able to provide some better feedback to the user about how to rewrite the sentence. In this case a good(?) suggestion would be:
'Every Fire Danger Area contains Streets that are close to a Fireplace'