Complex sentence: It was recognised as a "Global City of the Future" by McKinsey Quarterly, which had a nominal GDP of $3 billion in 2010, and is expected to increase to $17 billion by 2025.
Split into simpler sentences: It was recognised as a "Global City of the Future" by McKinsey Quarterly. It had a nominal GDP of $3 billion in 2010, and is expected to increase to $17 billion by 2025.