Question: Grosvenor House is a twin tower complex in Dubai Marina in Dubai, United Arab Emirates, the complex, which is owned by Sheikh Ahmed bin Saeed Al Maktoum,   is president of the Dubai Civil Aviation Authority, CEO and chairman of which organization, chairman of Dubai World, and Noor Takaful insurance company?
Sentence (from "Grosvenor House (Dubai)"): Grosvenor House is a twin tower complex in Dubai Marina in Dubai, United Arab Emirates.
Relevant evidence: No