Question:
Who was the head of state of Romania in Apr, 1957?

Context:
 Ion Iliescu is the head of the state of Romania from Dec, 2000 to Dec, 2004. 
 Gheorghe Gheorghiu-Dej is the head of the state of Romania from Mar, 1961 to Mar, 1965. 
 Ferdinand of Romania is the head of the state of Romania from Oct, 1914 to Jul, 1927. 
 Carol I of Romania is the head of the state of Romania from May, 1866 to May, 1881. 
 Carol II of Romania is the head of the state of Romania from Jun, 1930 to Sep, 1940. 
 Michael I of Romania is the head of the state of Romania from Jul, 1927 to Jun, 1930. 
 Chivu Stoica is the head of the state of Romania from Mar, 1965 to Dec, 1967. 
 Klaus Iohannis is the head of the state of Romania from Dec, 2014 to Dec, 2022. 
 Ion Gheorghe Maurer is the head of the state of Romania from Jan, 1958 to Mar, 1961. 
 Constantin Ion Parhon is the head of the state of Romania from Dec, 1947 to Jun, 1952. 
 Alexandru Ioan Cuza is the head of the state of Romania from Jan, 1862 to Feb, 1866. 
 Petru Groza is the head of the state of Romania from Jun, 1952 to Jan, 1958. 
 Nicolae Ceaușescu is the head of the state of Romania from Dec, 1967 to Apr, 1974. 
 Emil Constantinescu is the head of the state of Romania from Nov, 1996 to Dec, 2000. 
 Traian Băsescu is the head of the state of Romania from Dec, 2004 to Dec, 2014.

Answer:
Question:
Who was the head of state of Romania in Apr, 1957?

Context:
 Ion Iliescu is the head of the state of Romania from Dec, 2000 to Dec, 2004. 
 Gheorghe Gheorghiu-Dej is the head of the state of Romania from Mar, 1961 to Mar, 1965. 
 Ferdinand of Romania is the head of the state of Romania from Oct, 1914 to Jul, 1927. 
 Carol I of Romania is the head of the state of Romania from May, 1866 to May, 1881. 
 Carol II of Romania is the head of the state of Romania from Jun, 1930 to Sep, 1940. 
 Michael I of Romania is the head of the state of Romania from Jul, 1927 to Jun, 1930. 
 Chivu Stoica is the head of the state of Romania from Mar, 1965 to Dec, 1967. 
 Klaus Iohannis is the head of the state of Romania from Dec, 2014 to Dec, 2022. 
 Ion Gheorghe Maurer is the head of the state of Romania from Jan, 1958 to Mar, 1961. 
 Constantin Ion Parhon is the head of the state of Romania from Dec, 1947 to Jun, 1952. 
 Alexandru Ioan Cuza is the head of the state of Romania from Jan, 1862 to Feb, 1866. 
 Petru Groza is the head of the state of Romania from Jun, 1952 to Jan, 1958. 
 Nicolae Ceaușescu is the head of the state of Romania from Dec, 1967 to Apr, 1974. 
 Emil Constantinescu is the head of the state of Romania from Nov, 1996 to Dec, 2000. 
 Traian Băsescu is the head of the state of Romania from Dec, 2004 to Dec, 2014.

Answer:
user
Petru Groza
assistant
Question:
Who was the head of state of Romania in Apr, 1957?

Context:
 Ion Iliescu is the head of the state of Romania from Dec, 2000 to Dec, 2004. 
 Gheorghe Gheorghiu-Dej is the head of the state of Romania from Mar, 1961 to Mar, 1965. 
 Ferdinand of Romania is the head of the state of Romania from Oct, 1914 to Jul, 1927. 
 Carol I of Romania is the head of the state of Romania from May, 1866 to May, 1881. 
 Carol II of Romania is the head of the state of Romania from Jun, 1930 to Sep, 1940. 
 Michael I of Romania is the head of the state of Romania from Jul, 1927 to Jun, 1930. 
 Chivu Stoica is the head of the state of Romania from Mar, 1965 to Dec, 1967. 
 Klaus Iohannis is the head of the state of Romania from Dec, 2014 to Dec, 2022. 
 Ion Gheorghe Maurer is the head of the state of Romania from Jan, 1958 to Mar, 1961. 
 Constantin Ion Parhon is the head of the state of Romania from Dec, 1947 to Jun, 1952. 
 Alexandru Ioan Cuza is the head of the state of Romania from Jan, 1862 to Feb, 1866. 
 Petru Groza is the head of the state of Romania from Jun, 1952 to Jan, 1958. 
 Nicolae Ceaușescu is the head of the state of Romania from Dec, 1967 to Apr, 1974. 
 Emil Constantinescu is the head of the state of Romania from Nov, 1996 to Dec, 2000. 
 Traian Băsescu is the head of the state of Romania from Dec, 2004 to Dec, 2014.

Answer:
user
Ion Iliescu
Chivu Stoica
Klaus Iohannis
Nicolae Ceaușescu
Constantin Ion Parhon
Gheorghe Gheorghiu-Dej
Ion Gheorghe Maurer
Carol I of Romania
Michael I of Romania
Emil Constantinescu
Traian Băsescu
Alexandru Ioan Cuza
Ferdinand of Romania
Carol II of Romania
assistant
Question:
Who was the head of state of Romania in Apr, 1957?

Context:
 Ion Iliescu is the head of the state of Romania from Dec, 2000 to Dec, 2004. 
 Gheorghe Gheorghiu-Dej is the head of the state of Romania from Mar, 1961 to Mar, 1965. 
 Ferdinand of Romania is the head of the state of Romania from Oct, 1914 to Jul, 1927. 
 Carol I of Romania is the head of the state of Romania from May, 1866 to May, 1881. 
 Carol II of Romania is the head of the state of Romania from Jun, 1930 to Sep, 1940. 
 Michael I of Romania is the head of the state of Romania from Jul, 1927 to Jun, 1930. 
 Chivu Stoica is the head of the state of Romania from Mar, 1965 to Dec, 1967. 
 Klaus Iohannis is the head of the state of Romania from Dec, 2014 to Dec, 2022. 
 Ion Gheorghe Maurer is the head of the state of Romania from Jan, 1958 to Mar, 1961. 
 Constantin Ion Parhon is the head of the state of Romania from Dec, 1947 to Jun, 1952. 
 Alexandru Ioan Cuza is the head of the state of Romania from Jan, 1862 to Feb, 1866. 
 Petru Groza is the head of the state of Romania from Jun, 1952 to Jan, 1958. 
 Nicolae Ceaușescu is the head of the state of Romania from Dec, 1967 to Apr, 1974. 
 Emil Constantinescu is the head of the state of Romania from Nov, 1996 to Dec, 2000. 
 Traian Băsescu is the head of the state of Romania from Dec, 2004 to Dec, 2014.

Answer:
user
Petru Groza
assistant