http://data.gdeltproject.org/gdeltv3/web/ngrams/20250521234500.1gram.txt.gz
http://data.gdeltproject.org/gdeltv3/web/ngrams/20250521234500.2gram.txt.gz
http://data.gdeltproject.org/gdeltv3/web/ngrams/20250521234500.chargram.txt.gz