Question: When did Y. G. Mahendran's mother die?
Sentence (from "Y. G. Mahendran"): He is the son of Y. G. Parthasarathy, regarded as one of the pioneers of modern Tamil drama and Rajalakshmi Parthasarathy, founder and dean of Padma Seshadri Bala Bhavan group of schools, and nephew of veteran Tamil filmmaker K. Balaji.
Relevant evidence: Yes