Complex sentence: When While Mili is on a tour with her school, Thama finds out that Lili has softened to the thought of marriage, she calls Lili's uncle to town and asks him to arrange Lili and Athanu's marriage.
Split into simpler sentences: When While Mili is on a tour with her school, Thama finds out that Lili has softened to the thought of marriage. She calls Lili's uncle to town and asks him to arrange Lili and Athanu's marriage.