Nacken, Dortmund and Leverkusen are situated in the Ruhr area, correct? Please respond in a three-sentence structure. Also, I require that the sentence containing 'Ruhr' must be the second sentence.
user
Nacken is not a recognized location, but Dortmund and Leverkusen are indeed prominent cities. Dortmund is located in the heart of the Ruhr area, while Leverkusen is situated at the edge of this industrial region. Both cities play significant roles in the geography and economy of this area, though they are distinct entities with their own characteristics.
assistant