Labyrinth is only a noun so pretty much any sentence with the word labyrinth.
A road that goes nowhere is called a culdesac. Jake failed to escape when he ran into a culdesac.
The word cultural is an adjective, not a noun.
My project is due tomorrow and I haven't even read the book yet!
A noun can be used in a sentence as the subject of the sentence or of a clause within the sentence, as the object or indirect object of a transitive verb or its present participle used as a gerund in...