Question:
Who was the head of state of Israel in May, 1948?

Context:
 David Ben-Gurion is the head of the state of Israel from May, 1948 to May, 1948. 
 Chaim Weizmann is the head of the state of Israel from May, 1948 to Feb, 1949. 
 Shimon Peres is the head of the state of Israel from Jul, 2007 to Jul, 2014. 
 Zalman Shazar is the head of the state of Israel from May, 1963 to May, 1973. 
 Moshe Katsav is the head of the state of Israel from Aug, 2000 to Jul, 2007. 
 Avraham Burg is the head of the state of Israel from Jul, 2000 to Aug, 2000. 
 Ephraim Katzir is the head of the state of Israel from May, 1973 to May, 1978. 
 Isaac Herzog is the head of the state of Israel from Jul, 2021 to Dec, 2022. 
 Yosef Sprinzak is the head of the state of Israel from Nov, 1952 to Dec, 1952. 
 Dalia Itzik is the head of the state of Israel from Jan, 2007 to Jul, 2007. 
 Kadish Luz is the head of the state of Israel from Apr, 1963 to May, 1963. 
 Ezer Weizman is the head of the state of Israel from May, 1993 to Jul, 2000. 
 Chaim Herzog is the head of the state of Israel from May, 1983 to May, 1993. 
 Reuven Rivlin is the head of the state of Israel from Jul, 2014 to Jul, 2021. 
 Yitzhak Navon is the head of the state of Israel from May, 1978 to May, 1983. 
 Yitzhak Ben-Zvi is the head of the state of Israel from Dec, 1952 to Apr, 1963.

Answer:
Question:
Who was the head of state of Israel in May, 1948?

Context:
 David Ben-Gurion is the head of the state of Israel from May, 1948 to May, 1948. 
 Chaim Weizmann is the head of the state of Israel from May, 1948 to Feb, 1949. 
 Shimon Peres is the head of the state of Israel from Jul, 2007 to Jul, 2014. 
 Zalman Shazar is the head of the state of Israel from May, 1963 to May, 1973. 
 Moshe Katsav is the head of the state of Israel from Aug, 2000 to Jul, 2007. 
 Avraham Burg is the head of the state of Israel from Jul, 2000 to Aug, 2000. 
 Ephraim Katzir is the head of the state of Israel from May, 1973 to May, 1978. 
 Isaac Herzog is the head of the state of Israel from Jul, 2021 to Dec, 2022. 
 Yosef Sprinzak is the head of the state of Israel from Nov, 1952 to Dec, 1952. 
 Dalia Itzik is the head of the state of Israel from Jan, 2007 to Jul, 2007. 
 Kadish Luz is the head of the state of Israel from Apr, 1963 to May, 1963. 
 Ezer Weizman is the head of the state of Israel from May, 1993 to Jul, 2000. 
 Chaim Herzog is the head of the state of Israel from May, 1983 to May, 1993. 
 Reuven Rivlin is the head of the state of Israel from Jul, 2014 to Jul, 2021. 
 Yitzhak Navon is the head of the state of Israel from May, 1978 to May, 1983. 
 Yitzhak Ben-Zvi is the head of the state of Israel from Dec, 1952 to Apr, 1963.

Answer:
user
Chaim Weizmann
assistant
Question:
Who was the head of state of Israel in May, 1948?

Context:
 David Ben-Gurion is the head of the state of Israel from May, 1948 to May, 1948. 
 Chaim Weizmann is the head of the state of Israel from May, 1948 to Feb, 1949. 
 Shimon Peres is the head of the state of Israel from Jul, 2007 to Jul, 2014. 
 Zalman Shazar is the head of the state of Israel from May, 1963 to May, 1973. 
 Moshe Katsav is the head of the state of Israel from Aug, 2000 to Jul, 2007. 
 Avraham Burg is the head of the state of Israel from Jul, 2000 to Aug, 2000. 
 Ephraim Katzir is the head of the state of Israel from May, 1973 to May, 1978. 
 Isaac Herzog is the head of the state of Israel from Jul, 2021 to Dec, 2022. 
 Yosef Sprinzak is the head of the state of Israel from Nov, 1952 to Dec, 1952. 
 Dalia Itzik is the head of the state of Israel from Jan, 2007 to Jul, 2007. 
 Kadish Luz is the head of the state of Israel from Apr, 1963 to May, 1963. 
 Ezer Weizman is the head of the state of Israel from May, 1993 to Jul, 2000. 
 Chaim Herzog is the head of the state of Israel from May, 1983 to May, 1993. 
 Reuven Rivlin is the head of the state of Israel from Jul, 2014 to Jul, 2021. 
 Yitzhak Navon is the head of the state of Israel from May, 1978 to May, 1983. 
 Yitzhak Ben-Zvi is the head of the state of Israel from Dec, 1952 to Apr, 1963.

Answer:
user
Shimon Peres
Avraham Burg
Yitzhak Navon
Ezer Weizman
Reuven Rivlin
Moshe Katsav
Chaim Herzog
Isaac Herzog
Yitzhak Ben-Zvi
Yosef Sprinzak
Kadish Luz
Zalman Shazar
Dalia Itzik
Ephraim Katzir
Shimon Peres
Avraham Burg
Yitzhak Navon
Ezer Weizman
Reuven Rivlin
Moshe Katsav
Chaim Herzog
Isaac Herzog
Yitzhak Ben-Zvi
Yosef Sprinzak
Kadish Luz
Zalman Shazar
Dalia Itzik
Ephraim Katzir
assistant
Question:
Who was the head of state of Israel in May, 1948?

Context:
 David Ben-Gurion is the head of the state of Israel from May, 1948 to May, 1948. 
 Chaim Weizmann is the head of the state of Israel from May, 1948 to Feb, 1949. 
 Shimon Peres is the head of the state of Israel from Jul, 2007 to Jul, 2014. 
 Zalman Shazar is the head of the state of Israel from May, 1963 to May, 1973. 
 Moshe Katsav is the head of the state of Israel from Aug, 2000 to Jul, 2007. 
 Avraham Burg is the head of the state of Israel from Jul, 2000 to Aug, 2000. 
 Ephraim Katzir is the head of the state of Israel from May, 1973 to May, 1978. 
 Isaac Herzog is the head of the state of Israel from Jul, 2021 to Dec, 2022. 
 Yosef Sprinzak is the head of the state of Israel from Nov, 1952 to Dec, 1952. 
 Dalia Itzik is the head of the state of Israel from Jan, 2007 to Jul, 2007. 
 Kadish Luz is the head of the state of Israel from Apr, 1963 to May, 1963. 
 Ezer Weizman is the head of the state of Israel from May, 1993 to Jul, 2000. 
 Chaim Herzog is the head of the state of Israel from May, 1983 to May, 1993. 
 Reuven Rivlin is the head of the state of Israel from Jul, 2014 to Jul, 2021. 
 Yitzhak Navon is the head of the state of Israel from May, 1978 to May, 1983. 
 Yitzhak Ben-Zvi is the head of the state of Israel from Dec, 1952 to Apr, 1963.

Answer:
user
Chaim Weizmann
assistant