Fedor Solntsev
He discovered and restored mosaics and frescoes of Saint Sophia's Cathedral and Cathedral of the Dormition of Kiev Pechersk Lavra in Kiev , and of Cathedral of Saint Demetrius in Vladimir . 
<triplet> Saint Sophia's Cathedral <subj> Kiev <obj> located in the administrative territorial entity <triplet> Kiev Pechersk Lavra <subj> Kiev <obj> located in the administrative territorial entity <triplet> Cathedral of Saint Demetrius <subj> Vladimir <obj> location