Complex sentence: The Gateway Mall 2, which will add approximately of shopping area as part of the Araneta Center's Master Plan, which will include the construction of the first Ibis (hotel) in the Philippines, is now under construction, and set for 2019.
Split into simpler sentences: The Gateway Mall 2, which will add approximately of shopping area as part of the Araneta Center's Master Plan. Overall, the Gateway Mall will have, which will include the construction of the first Ibis (hotel) in the Philippines, is now under construction, and set for 2019.