<human>: Does the sentence "On September 21, 1953, Thomas Watson, Jr., the company's president at the time, sent out a controversial letter to all IBM employees stating that IBM needed to hire the best people, regardless of their race, ethnic origin, or gender." answer the question "What date did Thomas Watson, Jr. send out a letter about IBM hiring the best people regardless of race, gender, or origin?"

OPTIONS:
- yes
- no
<bot>: yes