Question:
Who was the chair of Oesterreichische Nationalbank in Apr, 1990?

Context:
 Herbert Schimetschek is the chair of Oesterreichische Nationalbank from Sep, 2003 to Aug, 2008. 
 Klaus Liebscher is the chair of Oesterreichische Nationalbank from Sep, 1998 to Aug, 2008. 
 Heinz Kienzl is the chair of Oesterreichische Nationalbank from Apr, 1990 to May, 1990. 
 Robert Holzmann is the chair of Oesterreichische Nationalbank from Sep, 2019 to Dec, 2022. 
 Harald Mahrer is the chair of Oesterreichische Nationalbank from Sep, 2019 to Dec, 2022. 
 Maria Schaumayer is the chair of Oesterreichische Nationalbank from Jun, 1990 to May, 1995. 
 Eugen Margarétha is the chair of Oesterreichische Nationalbank from Mar, 1952 to Jun, 1960. 
 Reinhard Kamitz is the chair of Oesterreichische Nationalbank from Jun, 1960 to Jan, 1966. 
 Andreas Korp is the chair of Oesterreichische Nationalbank from Sep, 1966 to Jan, 1968. 
 Ewald Nowotny is the chair of Oesterreichische Nationalbank from Sep, 2008 to Aug, 2019. 
 Adolf Wala is the chair of Oesterreichische Nationalbank from Sep, 1998 to Aug, 2003. 
 Hans Rizzi is the chair of Oesterreichische Nationalbank from Jul, 1945 to Mar, 1952. 
 Claus Raidl is the chair of Oesterreichische Nationalbank from Sep, 2008 to Aug, 2018. 
 Hellmuth Klauhs is the chair of Oesterreichische Nationalbank from Sep, 1988 to Apr, 1990.

Answer:
Question:
Who was the chair of Oesterreichische Nationalbank in Apr, 1990?

Context:
 Herbert Schimetschek is the chair of Oesterreichische Nationalbank from Sep, 2003 to Aug, 2008. 
 Klaus Liebscher is the chair of Oesterreichische Nationalbank from Sep, 1998 to Aug, 2008. 
 Heinz Kienzl is the chair of Oesterreichische Nationalbank from Apr, 1990 to May, 1990. 
 Robert Holzmann is the chair of Oesterreichische Nationalbank from Sep, 2019 to Dec, 2022. 
 Harald Mahrer is the chair of Oesterreichische Nationalbank from Sep, 2019 to Dec, 2022. 
 Maria Schaumayer is the chair of Oesterreichische Nationalbank from Jun, 1990 to May, 1995. 
 Eugen Margarétha is the chair of Oesterreichische Nationalbank from Mar, 1952 to Jun, 1960. 
 Reinhard Kamitz is the chair of Oesterreichische Nationalbank from Jun, 1960 to Jan, 1966. 
 Andreas Korp is the chair of Oesterreichische Nationalbank from Sep, 1966 to Jan, 1968. 
 Ewald Nowotny is the chair of Oesterreichische Nationalbank from Sep, 2008 to Aug, 2019. 
 Adolf Wala is the chair of Oesterreichische Nationalbank from Sep, 1998 to Aug, 2003. 
 Hans Rizzi is the chair of Oesterreichische Nationalbank from Jul, 1945 to Mar, 1952. 
 Claus Raidl is the chair of Oesterreichische Nationalbank from Sep, 2008 to Aug, 2018. 
 Hellmuth Klauhs is the chair of Oesterreichische Nationalbank from Sep, 1988 to Apr, 1990.

Answer:
user
Heinz Kienzl
assistant
Question:
Who was the chair of Oesterreichische Nationalbank in Apr, 1990?

Context:
 Herbert Schimetschek is the chair of Oesterreichische Nationalbank from Sep, 2003 to Aug, 2008. 
 Klaus Liebscher is the chair of Oesterreichische Nationalbank from Sep, 1998 to Aug, 2008. 
 Heinz Kienzl is the chair of Oesterreichische Nationalbank from Apr, 1990 to May, 1990. 
 Robert Holzmann is the chair of Oesterreichische Nationalbank from Sep, 2019 to Dec, 2022. 
 Harald Mahrer is the chair of Oesterreichische Nationalbank from Sep, 2019 to Dec, 2022. 
 Maria Schaumayer is the chair of Oesterreichische Nationalbank from Jun, 1990 to May, 1995. 
 Eugen Margarétha is the chair of Oesterreichische Nationalbank from Mar, 1952 to Jun, 1960. 
 Reinhard Kamitz is the chair of Oesterreichische Nationalbank from Jun, 1960 to Jan, 1966. 
 Andreas Korp is the chair of Oesterreichische Nationalbank from Sep, 1966 to Jan, 1968. 
 Ewald Nowotny is the chair of Oesterreichische Nationalbank from Sep, 2008 to Aug, 2019. 
 Adolf Wala is the chair of Oesterreichische Nationalbank from Sep, 1998 to Aug, 2003. 
 Hans Rizzi is the chair of Oesterreichische Nationalbank from Jul, 1945 to Mar, 1952. 
 Claus Raidl is the chair of Oesterreichische Nationalbank from Sep, 2008 to Aug, 2018. 
 Hellmuth Klauhs is the chair of Oesterreichische Nationalbank from Sep, 1988 to Apr, 1990.

Answer:
user
Adolf Wala
Klaus Liebscher
Claus Raidl
Robert Holzmann
Hans Rizzi
Ewald Nowotny
Hellmuth Klauhs
Harald Mahrer
Maria Schaumayer
Eugen Margarétha
Andreas Korp
Herbert Schimetschek
Reinhard Kamitz
Adolf Wala
Klaus Liebscher
Claus Raidl
Robert Holzmann
Hans Rizzi
Ewald Nowotny
Harald Mahrer
Maria Schaumayer
Eugen Margarétha
Andreas Korp
Herbert Schimetschek
Reinhard Kamitz
assistant
Question:
Who was the chair of Oesterreichische Nationalbank in Apr, 1990?

Context:
 Herbert Schimetschek is the chair of Oesterreichische Nationalbank from Sep, 2003 to Aug, 2008. 
 Klaus Liebscher is the chair of Oesterreichische Nationalbank from Sep, 1998 to Aug, 2008. 
 Heinz Kienzl is the chair of Oesterreichische Nationalbank from Apr, 1990 to May, 1990. 
 Robert Holzmann is the chair of Oesterreichische Nationalbank from Sep, 2019 to Dec, 2022. 
 Harald Mahrer is the chair of Oesterreichische Nationalbank from Sep, 2019 to Dec, 2022. 
 Maria Schaumayer is the chair of Oesterreichische Nationalbank from Jun, 1990 to May, 1995. 
 Eugen Margarétha is the chair of Oesterreichische Nationalbank from Mar, 1952 to Jun, 1960. 
 Reinhard Kamitz is the chair of Oesterreichische Nationalbank from Jun, 1960 to Jan, 1966. 
 Andreas Korp is the chair of Oesterreichische Nationalbank from Sep, 1966 to Jan, 1968. 
 Ewald Nowotny is the chair of Oesterreichische Nationalbank from Sep, 2008 to Aug, 2019. 
 Adolf Wala is the chair of Oesterreichische Nationalbank from Sep, 1998 to Aug, 2003. 
 Hans Rizzi is the chair of Oesterreichische Nationalbank from Jul, 1945 to Mar, 1952. 
 Claus Raidl is the chair of Oesterreichische Nationalbank from Sep, 2008 to Aug, 2018. 
 Hellmuth Klauhs is the chair of Oesterreichische Nationalbank from Sep, 1988 to Apr, 1990.

Answer:
user
Heinz Kienzl
assistant