Ivan Tsarevich
Tales about Ivan Tsarevich include "Ivan Tsarevich and the Grey Wolf" , "Tsarevna the Frog" , "The Sea Tsar and Vasilisa the Wise" , "The Tale about Rejuvenating Apples and the Life Water" , and "The Death of Koschei the Immortal ( also known as "Marya Morevna" ) . " 
<triplet> The Death of Koschei the Immortal <subj> Ivan Tsarevich <obj> characters <subj> The Sea Tsar and Vasilisa the Wise <obj> part of