Original sentence: In 1988 Stein served on the The Brady Commission, also known as the Presidential Task Force on Market Mechanisms, created by President Ronald Reagan to investigate the stock market crash of October 19th, 1987, or Black Monday
Edited sentence: In 1988 Stein served on the The Brady Commission, also known as the Presidential Task Force on Market Mechanisms, created by President Ronald Reagan to investigate the stock market crash of October 19, 1987, or Black Monday