{"subcategory": "1", "supercategory": "1", "kind": "contravariant equivalence"}
{"subcategory": "CompBoolAlg", "supercategory": "FinSet", "kind": "contravariant equivalence"}
{"subcategory": "FinSet", "supercategory": "CompBoolAlg", "kind": "contravariant equivalence"}
{"subcategory": "Frm", "supercategory": "Loc", "kind": "contravariant equivalence"}
{"subcategory": "Hilb", "supercategory": "Hilb", "kind": "contravariant equivalence"}
{"subcategory": "Loc", "supercategory": "Frm", "kind": "contravariant equivalence"}
{"subcategory": "Perm", "supercategory": "Perm", "kind": "contravariant equivalence"}
{"subcategory": "Prof", "supercategory": "Prof", "kind": "contravariant equivalence"}
{"subcategory": "Rel", "supercategory": "Rel", "kind": "contravariant equivalence"}
{"subcategory": "Span(Set)", "supercategory": "Span(Set)", "kind": "contravariant equivalence"}
{"subcategory": "nCob", "supercategory": "nCob", "kind": "contravariant equivalence"}