# geoJSON A valid GEOJson feature or feature collection as a string that can be parsed as JSON. The technology for LDaCA's portals is a web application called [Oni](https://data.ldaca.edu.au/about). Oni can handle geographic data which is formatted as JSON strings and the preferred such format is [GeoJSON](https://geojson.org/). The value for this property is expected to be of the type [schema:Text](https://schema.org/Text). This property is used on the type:\ [schema:GeoCoordinates](https://schema.org/GeoCoordinates)\ [schema:GeoShape](https://schema.org/GeoShape)\ [schema:Language](https://schema.org/Language)\ [CollectionEvent](/metadata-for-language-data/classes/collectionevent.md) --- # Agent Instructions: Querying This Documentation If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question. Perform an HTTP GET request on the current page URL with the `ask` query parameter: ``` GET https://ldaca.gitbook.io/metadata-for-language-data/properties/geojson.md?ask= ``` The question should be specific, self-contained, and written in natural language. The response will contain a direct answer to the question and relevant excerpts and sources from the documentation. Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.