duckduck_answer: Call DuckDuckGo Instant Answer API
Description
Makes a synchronous API call to the DuckDuckGo Instant Answer API.
Take a look at DuckDuckGo's terms of use (https://api.duckduckgo.com/api) before using it.
Always returns a list. If the API call was successful it contains the response of
the duckduckgo API as parsed by fromJSON. In addition the object's
attributes contain additional meta data. Especially the status attribute indicates
if something went wrong during the HTTP call or parsing of the JSON text. In case the call was successful the status attribute is equal to "OK". In case something went wrong, the status attribute is equal to "error" and in the
error attribute you will find more information. In particular the type, which is
either "http_error" or "json_parse_error" depending on the error's source. In case of a "http_error", there is an additional message and http_status
element. In case of "json_parse_error", there is an additional message element. In addition there is always a source element with the URL used to query the data.