Complex sentence: He later began researching and reconstructing Lithuanian mythology basing his work on the methods of Vladimir Propp, Georges Dumézil, Claude Lévi-Strauss, and Marcel Detienne.
Split into simpler sentences: He later began researching and reconstructing Lithuanian mythology. He based his work on the methods of Vladimir Propp, Georges Dumézil, Claude Lévi-Strauss, and Marcel Detienne.