diff --git a/src/storage/choiceorigins.cpp b/src/storage/choiceorigins.cpp
index 01488b6..9973993 100644
--- a/src/storage/choiceorigins.cpp
+++ b/src/storage/choiceorigins.cpp
@@ -1,15 +1,35 @@
 #include "choiceorigins.h"
 #include "storm/storage/sparse/JaniChoiceOrigins.h"
+#include "storm/storage/sparse/PrismChoiceOrigins.h"
 #include "storm/storage/jani/Model.h"
 
+using ChoiceOrigins = storm::storage::sparse::ChoiceOrigins;
+using JaniChoiceOrigins = storm::storage::sparse::JaniChoiceOrigins;
+using PrismChoiceOrigins = storm::storage::sparse::PrismChoiceOrigins;
+
 void define_origins(py::module& m) {
-    using ChoiceOrigins = storm::storage::sparse::ChoiceOrigins;
+
     py::class_<ChoiceOrigins, std::shared_ptr<ChoiceOrigins>> co(m, "ChoiceOrigins",  "This class represents the origin of choices of a model in terms of the input model spec.");
-    co.def("get_identifier_info", &ChoiceOrigins::getIdentifierInfo, "identifier"_a, "human readable string")
-      .def("get_choice_info", &ChoiceOrigins::getChoiceInfo, "identifier"_a, "human readable string")      ;
-    using JaniChoiceOrigins = storm::storage::sparse::JaniChoiceOrigins;
+    co.def("is_prism_choice_origins", &ChoiceOrigins::isPrismChoiceOrigins)
+      .def("is_jani_choice_origins", &ChoiceOrigins::isJaniChoiceOrigins)
+      .def("as_prism_choice_origins", [](ChoiceOrigins &co) -> PrismChoiceOrigins& { return co.asPrismChoiceOrigins(); })
+      .def("as_jani_choice_origins", [](ChoiceOrigins &co) -> JaniChoiceOrigins& { return co.asJaniChoiceOrigins(); })
+      .def("get_identifier_info", &ChoiceOrigins::getIdentifierInfo, "identifier"_a, "human readable string")
+      .def("get_choice_info", &ChoiceOrigins::getChoiceInfo, "identifier"_a, "human readable string")
+      .def("get_number_of_identifiers", &ChoiceOrigins::getNumberOfIdentifiers, "the number of considered identifier")
+      ;
+
+
     py::class_<JaniChoiceOrigins, std::shared_ptr<JaniChoiceOrigins>>(m, "JaniChoiceOrigins", "This class represents for each choice the origin in the jani spec.", co)
+            .def(py::init<std::shared_ptr<storm::jani::Model const>const&, std::vector<uint_fast64_t> const&, std::vector<JaniChoiceOrigins::EdgeIndexSet> const&>(), "jani_model"_a, "index_to_identifier_mapping"_a, "identifier_to_edge_index__set_mapping"_a)
             .def_property_readonly("model", &JaniChoiceOrigins::getModel, "retrieves the associated JANI model")
             .def("get_edge_index_set", [](JaniChoiceOrigins const& co, uint64_t choice) -> auto& { return co.getEdgeIndexSet(choice); }, "returns the set of edges that induced the choice", py::arg("choice_index"))
-       ;
+            ;
+
+    py::class_<PrismChoiceOrigins, std::shared_ptr<PrismChoiceOrigins>>(m, "PrismChoiceOrigins", "This class represents for each choice the set of prism commands that induced the choice.", co)
+            .def(py::init<std::shared_ptr<storm::prism::Program const>const&, std::vector<uint_fast64_t> const&, std::vector<PrismChoiceOrigins::CommandSet> const&>(), "prism_program"_a, "index_to_identifier_mapping"_a, "identifier_to_command_set_mapping"_a)
+            .def_property_readonly("program", &PrismChoiceOrigins::getProgram, "retrieves the associated Prism program")
+            .def("get_command_set", [](PrismChoiceOrigins const& co, uint64_t choice) -> auto& { return co.getCommandSet(choice); }, "Returns the set of prism commands that induced the choice", py::arg("choice_index"))
+            ;
+
 }
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