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?

<P0-S0> Emaar Properties is a real estate development company located in the United Arab Emirates (UAE). <P0-S1>  It is a public joint-stock company and is listed on the Dubai Financial Market as DFM: EMAAR . <P0-S2>  The company operates internationally providing property development and management services. <P0-S3>  With six business segments and 60 active companies, Emaar has collective presence in 36 markets across the Middle East, North Africa, Pan-Asia, Europe and North America. <P0-S4>  Emaar Properties Dubai is one of the largest real estate developers in the UAE and is known for various large-scale projects such as developing Burj Khalifa, the tallest building in the world. <SEP> <P1-S0> Cityscape Global is the world's largest networking exhibition and conference on property development. <P1-S1>  It is a trade show for the real estate industry in Dubai attended by regional and international investors, developers, architects and designers, governmental authorities, people involved in the design and construction of both public and private real estate developments. <P1-S2>  Over 150 local, regional and international real estate firms exhibit their projects and services at the exhibition at the Dubai International Convention Centre (DICEC). <P1-S3>  It is organised by Informa Exhibitions. <P1-S4>  Sister events of Cityscape global are Cityscape Abu Dhabi, Cityscape Egypt, Cityscape Riyadh, Cityscape Jeddah, Cityscape Qatar, Latin America and Cityscape Asia <SEP> <P2-S0> 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. <P2-S1>  Alabbar, who acts as a top adviser to the Ruler of Dubai and Vice President and Prime Minister of the United Arab Emirates, Sheikh Mohammed bin Rashid Al Maktoum, formerly served as the founding director general of the Dubai Department of Economic Development. <SEP> <P3-S0> Dubai Opera is a 1901-seat, multi-format, performing arts centre, which is located within The Opera District in Downtown Dubai. <P3-S1>  It was developed by Emaar Properties to host a variety of performances and events including theatre, opera, ballet, concerts, conferences and exhibitions. <P3-S2>  Its plans were announced by Sheikh Mohammed bin Rashid Al Maktoum in March 2012 and it was completed in 2016. <P3-S3>  It opened on 31 August 2016 with a performance by Plácido Domingo.