Question:
Who was the chair of National Academy of Sciences of Armenia in May, 1946?

Context:
 Radik Martirosyan is the chair of National Academy of Sciences of Armenia from Jan, 2007 to Jan, 2021. 
 Fadey Sargsyan is the chair of National Academy of Sciences of Armenia from Jan, 1993 to Jan, 2007. 
 Joseph Orbeli is the chair of National Academy of Sciences of Armenia from Jan, 1943 to Jan, 1947. 
 Victor Ambartsumian is the chair of National Academy of Sciences of Armenia from Jan, 1947 to Jan, 1993.

Answer:
Question:
Who was the chair of National Academy of Sciences of Armenia in May, 1946?

Context:
 Radik Martirosyan is the chair of National Academy of Sciences of Armenia from Jan, 2007 to Jan, 2021. 
 Fadey Sargsyan is the chair of National Academy of Sciences of Armenia from Jan, 1993 to Jan, 2007. 
 Joseph Orbeli is the chair of National Academy of Sciences of Armenia from Jan, 1943 to Jan, 1947. 
 Victor Ambartsumian is the chair of National Academy of Sciences of Armenia from Jan, 1947 to Jan, 1993.

Answer:
user
Joseph Orbeli
assistant
Question:
Who was the chair of National Academy of Sciences of Armenia in May, 1946?

Context:
 Radik Martirosyan is the chair of National Academy of Sciences of Armenia from Jan, 2007 to Jan, 2021. 
 Fadey Sargsyan is the chair of National Academy of Sciences of Armenia from Jan, 1993 to Jan, 2007. 
 Joseph Orbeli is the chair of National Academy of Sciences of Armenia from Jan, 1943 to Jan, 1947. 
 Victor Ambartsumian is the chair of National Academy of Sciences of Armenia from Jan, 1947 to Jan, 1993.

Answer:
user
Radik Martirosyan
Fadey Sargsyan
Victor Ambartsumian
assistant
Question:
Who was the chair of National Academy of Sciences of Armenia in May, 1946?

Context:
 Radik Martirosyan is the chair of National Academy of Sciences of Armenia from Jan, 2007 to Jan, 2021. 
 Fadey Sargsyan is the chair of National Academy of Sciences of Armenia from Jan, 1993 to Jan, 2007. 
 Joseph Orbeli is the chair of National Academy of Sciences of Armenia from Jan, 1943 to Jan, 1947. 
 Victor Ambartsumian is the chair of National Academy of Sciences of Armenia from Jan, 1947 to Jan, 1993.

Answer:
user
Joseph Orbeli
assistant