Fill in the response. A 2 person dialog: [+] who was Franz Joseph I of Austria's mother?. [+] Princess Sophie of Bavaria. [+] was Franz Joseph I of Austria married?. [+] Franz Joseph I of Austria married Empress Elisabeth of Austria. [+] did Franz Joseph I of Austria produce heirs with Sophie Duchess of Hohenberg?. [+] their first daughter Sophie died as an infant, and their only son Rudolf died by suicide in 1889. [+] were there any other children b?y Franz Joseph I of austria and Sophie Duchess of Hohenberg?. [+] Are there any other interesting aspects about the Franz Joseph I of Austria article?. [+] Franz Joseph I Prince of Austria's wife Empress Elisabeth of Austria was stabbed to death by an Italian anarchist in 1898 while on a visit to Geneva.. [+] 
what did Franz Joseph I of Austria  do after that happened?