Complex sentence: Many houses that have courtyards are not courtyard houses of the type covered by this article, for example large houses often have small courtyards surrounded by service rooms or corridors, but the main rooms are not disposed around a courtyard.
Split into simpler sentences: Many houses that have courtyards are not courtyard houses of the type covered by this article. For example, large houses often have small courtyards surrounded by service rooms or corridors, but the main rooms are not disposed around a courtyard.