const urn_comunica_default_rdf_join_actors_optional_bind = new (require('@comunica/actor-rdf-join-optional-bind').ActorRdfJoinOptionalBind)({
  'bindOrder': 'depth-first',
  'selectivityModifier': 0.0001,
  'mediatorQueryOperation': urn_comunica_default_query_operation_mediators_main,
  'mediatorJoinSelectivity': urn_comunica_default_rdf_join_selectivity_mediators_main,