Question:
Who was the head of state of Israel in Dec, 1968?

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

Answer:
Question:
Who was the head of state of Israel in Dec, 1968?

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

Answer:
user
Zalman Shazar
assistant
Question:
Who was the head of state of Israel in Dec, 1968?

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

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
David Ben-Gurion
Dalia Itzik
Ephraim Katzir
Chaim Weizmann
assistant
Question:
Who was the head of state of Israel in Dec, 1968?

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

Answer:
user
Zalman Shazar
assistant