document: {"document":{"title":"na","text":"The Learning Network. The Learning Network is a blog for parents, teachers and students that is freely available outside of the New York Times digital subscription service, and does not require registration. Students 13 and older are invited to post comments with their first names only on any open posts in the blog in accordance with New York Times Commenting practice. Though an email address must be provided in order to post a comment, it is not shared or sold to third parties, and does not appear publicly on the blog. To review or remove the optional email address (personal information collected), please use this form to contact the Learning Network. ","paragraphs":null,"sentences":null,"language":null},"classifications":[{"level":"document-Majority","labels":["International and Specific Audiences"],"label_definitions":null}]}