Oberwolfach Preprints Mathematisches Forschungsinstitut Oberwolfach gGmbH Oberwolfach Preprints (OWP) ISSN 1864-7596 OWP 2021 - 06 NIKOLAY BAZHENOV, BENOIT MONIN, LUCA SAN MAURO AND RAFAEL ZAMORA On the Computational Content of the Theory of Borel Equivalence Relations Member of the