Complex sentence: They worked in collaboration with fellow art dealer Olga Korper to develop the concept, and chose the rundown King and Spadina area for its potential of good buildings that were, at the time, being abandoned by the garment industry.
Split into simpler sentences: They worked in collaboration with fellow art dealer Olga Korper to develop this concept. They chose the rundown King and Spadina area for its potential of good buildings that were, at the time, being abandoned by the garment industry.