Weimar Republic (German: "Weimarer Republik" ] ) was an unofficial, historical designation for the German state between 1919 and 1933. The name derives from the city of Weimar, where its constitutional assembly first took place. The official name of the state was "Deutsches Reich"; it had remained unchanged since 1871. In English the country was usually known simply as Germany.
in 1913 the official language of germany was french
it does not mention what the official language was in 1913, therefore you cant say whether or not it was french. The system may have missed this as it is not explicitly stated aboe
( z1 language :name ( z2 name :op "French" ) :domain ( z3 language :mod ( z4 official ) :poss ( z5 country :name ( z6 name :op "Germany" ) ) ) :time ( z7 date-entity :year 1913 ) )