@openstreetmap/id-tagging-schema/data/fields/gender_simple.json

The OpenStreetMap tagging model used by the iD editor

{
    "type": "manyCombo",
    "keys": [
        "female",
        "male"
    ],
    "label": "{gender}",
    "stringsCrossReference": "{gender}",
    "options": [
        "female",
        "male"
    ]
}