Question:
Who was the head coach of the team Legia Warsaw in Apr, 1954?

Context:
 Jerzy Kopa is the head coach of Legia Warsaw from Apr, 1998 to Jan, 1999. 
 Lucjan Brychczy is the head coach of Legia Warsaw from Oct, 2004 to Dec, 2004. 
 Władysław Stachurski is the head coach of Legia Warsaw from Jul, 1996 to Jun, 1997. 
 Aleksandar Vuković is the head coach of Legia Warsaw from Dec, 2021 to May, 2022. 
 Wacław Kuchar is the head coach of Legia Warsaw from Jul, 1949 to Dec, 1953. 
 Dariusz Kubicki is the head coach of Legia Warsaw from Jun, 1999 to Sep, 1999. 
 Ricardo Sá Pinto is the head coach of Legia Warsaw from Aug, 2018 to Mar, 2019. 
 Józef Kałuża is the head coach of Legia Warsaw from May, 1930 to Jul, 1930. 
 Karol Hanke is the head coach of Legia Warsaw from Mar, 1936 to Nov, 1936. 
 Andrzej Strejlau is the head coach of Legia Warsaw from Dec, 1987 to Jun, 1989. 
 Besnik Hasi is the head coach of Legia Warsaw from Jun, 2016 to Sep, 2016. 
 Jan Urban is the head coach of Legia Warsaw from Jun, 2007 to Mar, 2010. 
 Jaroslav Vejvoda is the head coach of Legia Warsaw from Jul, 1973 to Jul, 1975. 
 Edward Drabiński is the head coach of Legia Warsaw from Feb, 1948 to Sep, 1948. 
 Kazimierz Górski is the head coach of Legia Warsaw from Jul, 1981 to Dec, 1982. 
 Edmund Zientara is the head coach of Legia Warsaw from Jul, 1969 to Jul, 1971. 
 Longin Janeczek is the head coach of Legia Warsaw from Jul, 1965 to Jun, 1966. 
 Romeo Jozak is the head coach of Legia Warsaw from Sep, 2017 to Apr, 2018. 
 Jacek Magiera is the head coach of Legia Warsaw from Sep, 2016 to Sep, 2017. 
 Paweł Janas is the head coach of Legia Warsaw from Jan, 1994 to Jun, 1996. 
 Janos Steiner is the head coach of Legia Warsaw from Feb, 1954 to Dec, 1955. 
 Maciej Skorża is the head coach of Legia Warsaw from Jun, 2010 to May, 2012. 
 Ryszard Koncewicz is the head coach of Legia Warsaw from Jan, 1956 to Dec, 1958. 
 Kosta Runjaić is the head coach of Legia Warsaw from May, 2022 to Dec, 2022. 
 Stanisław Mielech is the head coach of Legia Warsaw from Jul, 1933 to Sep, 1933. 
 Stanislav Cherchesov is the head coach of Legia Warsaw from Oct, 2015 to Jun, 2016. 
 Dragan Okuka is the head coach of Legia Warsaw from Mar, 2001 to Jun, 2003. 
 Czesław Michniewicz is the head coach of Legia Warsaw from Sep, 2020 to Oct, 2021. 
 Janusz Wójcik is the head coach of Legia Warsaw from Aug, 1992 to Jan, 1994. 
 Dean Klafurić is the head coach of Legia Warsaw from Apr, 2018 to Aug, 2018. 
 Krzysztof Etmanowicz is the head coach of Legia Warsaw from Aug, 1991 to Aug, 1992. 
 Dariusz Wdowczyk is the head coach of Legia Warsaw from Sep, 2005 to Apr, 2007. 
 Stefan Białas is the head coach of Legia Warsaw from Mar, 2010 to May, 2010. 
 Stjepan Bobek is the head coach of Legia Warsaw from Apr, 1959 to Dec, 1959. 
 Henning Berg is the head coach of Legia Warsaw from Dec, 2013 to Oct, 2015. 
 Jerzy Engel is the head coach of Legia Warsaw from Jul, 1985 to Aug, 1987. 
 Krzysztof Gawara is the head coach of Legia Warsaw from Oct, 2004 to Dec, 2004. 
 Jacek Zieliński is the head coach of Legia Warsaw from Apr, 2007 to Jun, 2007. 
 Rudolf Kapera is the head coach of Legia Warsaw from Jul, 1989 to Apr, 1990. 
 Franciszek Smuda is the head coach of Legia Warsaw from Sep, 1999 to Mar, 2001.

Answer:
Janos Steiner