Complex sentence: Dubai Ports World is a company owned by the government of Dubai in the United Arab Emirates, via a holding company which is under the direct control of Dubai's ruler, Sheik Mohammed bin Rashid Al Maktoum.
Split into simpler sentences: Dubai Ports World is a company owned by the government of Dubai in the United Arab Emirates, via a holding company. This holding company is under the direct control of Dubai's ruler, Sheik Mohammed bin Rashid Al Maktoum.