Question: What is the name of the property company that developed the Dubai Opera and is one of the largest real estate developments in the world?
Sentence (from "Mohamed Alabbar"): Mohamed Alabbar (Arabic: محمد بن علي العبار‎ ‎ ), is an Emirati billionaire and the founder and Chairman of Emaar Properties, one of the largest real estate development companies in the world with annual revenue of $4.2 billion and a market cap of over $20 billion, known for developing the world's tallest building Burj Khalifa and the world's largest mall Dubai Mall, which are part of Emaar's 500-acre flagship mega-development Downtown Dubai, as well as The Tower at Dubai Creek Harbour, set to be over 3,000 feet tall upon completion in 2020, the 2,000-seat Dubai Opera, Dubai Marina, the world's biggest man-made marina, Emirates Hills, regarded as "the Beverly Hills of Dubai", and King Abdullah Economic City, established with King Abdullah of Saudi Arabia as one of the largest private developments in the region spanning 64 square miles.
Relevant evidence: Yes