Question:
Who was the chair of American Sociological Association in May, 2021?

Context:
 Dorothy Swaine Thomas is the chair of American Sociological Association from Jan, 1952 to Jan, 1953. 
 Aldon Morris is the chair of American Sociological Association from Jan, 2021 to Jan, 2022. 
 Ruth Milkman is the chair of American Sociological Association from Jan, 2016 to Jan, 2017.

Answer:
Question:
Who was the chair of American Sociological Association in May, 2021?

Context:
 Dorothy Swaine Thomas is the chair of American Sociological Association from Jan, 1952 to Jan, 1953. 
 Aldon Morris is the chair of American Sociological Association from Jan, 2021 to Jan, 2022. 
 Ruth Milkman is the chair of American Sociological Association from Jan, 2016 to Jan, 2017.

Answer:
user
Aldon Morris
assistant
Question:
Who was the chair of American Sociological Association in May, 2021?

Context:
 Dorothy Swaine Thomas is the chair of American Sociological Association from Jan, 1952 to Jan, 1953. 
 Aldon Morris is the chair of American Sociological Association from Jan, 2021 to Jan, 2022. 
 Ruth Milkman is the chair of American Sociological Association from Jan, 2016 to Jan, 2017.

Answer:
user
Ruth Milkman
Dorothy Swaine Thomas
assistant
Question:
Who was the chair of American Sociological Association in May, 2021?

Context:
 Dorothy Swaine Thomas is the chair of American Sociological Association from Jan, 1952 to Jan, 1953. 
 Aldon Morris is the chair of American Sociological Association from Jan, 2021 to Jan, 2022. 
 Ruth Milkman is the chair of American Sociological Association from Jan, 2016 to Jan, 2017.

Answer:
user
Aldon Morris
assistant