Uznav o bolezni Aleksandra Andreevica, ja poexala v Moskvu i ostavalas' tam do ego vyzdorovlenija
PF-learn-ger.about illness A.A., I PF-go-pst.sg.masc.in Moscow and remain-IMP-pst.sg.fem.there until his recovery
On learning about the illness of Alexandr Andreevic, I went to Moscow and remained there until his recovery