in athena-udfs-textanalytics/src/main/java/com/amazonaws/athena/udf/textanalytics/TextAnalyticsUDFHandler.java [998:1006]
private static String mergeEntities(String[] arrayOfJson) throws Exception
{
JSONArray resultArray = new JSONArray();
for (int i = 0; i < arrayOfJson.length; i++) {
JSONArray entities = new JSONArray(arrayOfJson[i]);
resultArray.putAll(entities);
}
return resultArray.toString();
}