Complex sentence: Hema Upadhyay (born Hema Hirani;? 1972--13 December 2015) was an Indian artist who lived and worked in Mumbai, India, from 1998 to her death, in 2015.
Split into simpler sentences: Hema Upadhyay (1972--13 December 2015) was an Indian artist based in Mumbai. She was active from 1998 to her death, in 2015.