Sentence examples for not marked from inspiring English sources

The phrase "not marked" may be grammatically correct and usable in written English in certain contexts.
It can be used to refer to something that has not been designated or identified in some way. For example: - The suspect's car was not marked with a license plate, making it difficult for police to identify. - The answers to the final exam were not marked with a red pen as the teacher had promised, causing confusion among the students. - The hiking trail was not marked with clear signs and many hikers got lost in the woods. - The package was not marked with fragile stickers and arrived damaged. - The dog's food bowl was not marked with his name, causing the owner to accidentally feed the wrong dog.