I hope we will the two concur this sentence is Improper because "great" is undoubtedly an adjective, and can't be the subject of "is". A similar is genuine when you place "the best" in that location. It is easy to argue that "the best" could be proper as the topic https://knoxrauqh.win-blog.com/19124947/the-best-side-of-divorce-lawyer-in-dha-karachi-pakistan