Question:
Who was the head of Romania in Apr, 2017?

Context:
 Viorica Dăncilă is the head of the government of Romania from Jan, 2018 to Nov, 2019. 
 Manea Mănescu is the head of the government of Romania from Feb, 1974 to Mar, 1979. 
 Octavian Goga is the head of the government of Romania from Dec, 1937 to Feb, 1938. 
 Theodor Rosetti is the head of the government of Romania from Mar, 1888 to Mar, 1889. 
 Mihai Răzvan Ungureanu is the head of the government of Romania from Feb, 2012 to May, 2012. 
 Dacian Cioloș is the head of the government of Romania from Nov, 2015 to Jan, 2017. 
 Nicolae Iorga is the head of the government of Romania from Apr, 1931 to Jun, 1932. 
 Petru Groza is the head of the government of Romania from Mar, 1945 to Jun, 1952. 
 Ion C. Brătianu is the head of the government of Romania from Jun, 1881 to Mar, 1888. 
 Nicolae Ciucă is the head of the government of Romania from Nov, 2021 to Dec, 2022. 
 Petre Roman is the head of the government of Romania from Dec, 1989 to Oct, 1991. 
 Victor Ciorbea is the head of the government of Romania from Dec, 1996 to Apr, 1998. 
 Ion Ghica is the head of the government of Romania from Dec, 1870 to Mar, 1871. 
 Constantin Bosianu is the head of the government of Romania from Jan, 1865 to Jun, 1865. 
 Dimitrie Brătianu is the head of the government of Romania from Apr, 1881 to Jun, 1881. 
 Florin Cîțu is the head of the government of Romania from Dec, 2020 to Nov, 2021. 
 Constantin Argetoianu is the head of the government of Romania from Sep, 1939 to Nov, 1939. 
 Ștefan Golescu is the head of the government of Romania from Nov, 1867 to May, 1868. 
 Emil Boc is the head of the government of Romania from Dec, 2008 to Feb, 2012. 
 Nicolae Crețulescu is the head of the government of Romania from Jun, 1865 to Feb, 1866. 
 Nicolae Golescu is the head of the government of Romania from May, 1868 to Nov, 1868. 
 Gheorghe Gheorghiu-Dej is the head of the government of Romania from Jun, 1952 to Oct, 1955. 
 Gheorghe Argeșanu is the head of the government of Romania from Sep, 1939 to Sep, 1939. 
 Armand Călinescu is the head of the government of Romania from Mar, 1939 to Sep, 1939. 
 Mihail Kogălniceanu is the head of the government of Romania from Oct, 1863 to Jan, 1865. 
 Mugur Isărescu is the head of the government of Romania from Dec, 1999 to Dec, 2000. 
 Miron Cristea is the head of the government of Romania from Feb, 1938 to Mar, 1939. 
 Constantin Sănătescu is the head of the government of Romania from Aug, 1944 to Dec, 1944. 
 Ion Gigurtu is the head of the government of Romania from Jul, 1940 to Sep, 1940. 
 Constantin Dăscălescu is the head of the government of Romania from May, 1982 to Dec, 1989. 
 Barbu Catargiu is the head of the government of Romania from Feb, 1862 to Jun, 1862. 
 Nicolae Rădescu is the head of the government of Romania from Dec, 1944 to Feb, 1945. 
 Ion Emanuel Florescu is the head of the government of Romania from Mar, 1891 to Dec, 1891. 
 Theodor Stolojan is the head of the government of Romania from Oct, 1991 to Nov, 1992. 
 Gheorghe Tătărescu is the head of the government of Romania from Jan, 1934 to Dec, 1937. 
 Ion Gheorghe Maurer is the head of the government of Romania from Mar, 1961 to Feb, 1974. 
 Manolache Costache Epureanu is the head of the government of Romania from May, 1876 to Aug, 1876. 
 Ilie Verdeț is the head of the government of Romania from Mar, 1979 to May, 1982. 
 Călin Popescu-Tăriceanu is the head of the government of Romania from Dec, 2004 to Dec, 2008. 
 Radu Vasile is the head of the government of Romania from Apr, 1998 to Dec, 1999. 
 Alexandru G. Golescu is the head of the government of Romania from Feb, 1870 to Apr, 1870. 
 Adrian Năstase is the head of the government of Romania from Dec, 2000 to Dec, 2004. 
 Victor Ponta is the head of the government of Romania from May, 2012 to Nov, 2015. 
 Take Ionescu is the head of the government of Romania from Dec, 1921 to Jan, 1922. 
 Ludovic Orban is the head of the government of Romania from Nov, 2019 to Dec, 2020. 
 Petre S. Aurelian is the head of the government of Romania from Dec, 1896 to Apr, 1897. 
 Mihai Tudose is the head of the government of Romania from Jun, 2017 to Jan, 2018. 
 Sorin Grindeanu is the head of the government of Romania from Jan, 2017 to Jun, 2017. 
 Nicolae Văcăroiu is the head of the government of Romania from Nov, 1992 to Dec, 1996. 
 Lascăr Catargi is the head of the government of Romania from Dec, 1891 to Oct, 1895. 
 Dimitrie Sturdza is the head of the government of Romania from Apr, 1897 to Apr, 1899. 
 Dimitrie Ghica is the head of the government of Romania from Nov, 1868 to Jan, 1870. 
 Chivu Stoica is the head of the government of Romania from Oct, 1955 to Mar, 1961. 
 Ion G. Duca is the head of the government of Romania from Nov, 1933 to Dec, 1933.

Answer:
Sorin Grindeanu