Complex sentence: It was developed in December 2001 and officially opened in August 2002 as a joint project of Singaporean company, Keppel Land and SM Prime Holdings, the parent company of the SM group of malls.
Split into simpler sentences: It was developed in December 2001 and officially opened in August 2002. It is a joint project of Singaporean company, Keppel Land and SM Prime Holdings, the parent company of the SM group of malls.