Complex sentence: Adler has also claimed in biographical and campaign materials to be the first child of Holocaust survivors elected to the House of Commons, a claim that was challenged by former Liberal MP Raymonde Folco, who sat in the House of Commons from 1997 to 2011.
Split into simpler sentences: Adler has also claimed in biographical and campaign materials to be the first child of Holocaust survivors elected a member of Parliament. However, this claim has been challenged by former Liberal MP Raymonde Folco who sat in the House of Commons from 1997 to 2011.