Complex sentence: Najd Tower is a 340 metre tall futuristic skyscraper with 82 floors and 496 rooms in Dubai, United Arab Emirates, whose construction started in 2005 however construction if on-hold and the planned completion date of 2008 is expected to be missed.
Split into simpler sentences: Najd Tower is a 340 metre tall, futuristic skyscraper with 82 floors and 496 rooms in Dubai, United Arab Emirates, whose construction started in 2005. However, construction has been put on-hold, and the planned completion date of 2008 is expected to be missed.