These corpora consist of single and 1 According to Ethnologue: www.ethnologue.com/ language/urdLast visited: 04-03-2016 2 DUC: www-nlpir.nist.gov/projects/duc/ Last visited: 04-03-2016 3 TAC: http://www.nist.gov/tac/ Last visited: 04-03-2016 multi-document summaries written by humans.
they contain real text as written by the native speakers.