# Attributions

## `modern_english_sample.txt`

This file is an excerpt from the English Wikipedia article
[**Natural language processing**](https://en.wikipedia.org/wiki/Natural_language_processing),
retrieved 2026-05-11 via the MediaWiki API (`prop=extracts&explaintext=1`).

The excerpt covers the article's introduction and a portion of the History
section (through "Statistical NLP"). Wikipedia section headers were removed
programmatically so the text reads as continuous prose suitable for
character-level language-model evaluation; no other modifications were made.

**License:** [Creative Commons Attribution-ShareAlike 4.0 International
(CC BY-SA 4.0)](https://creativecommons.org/licenses/by-sa/4.0/).

**Attribution:** "Natural language processing", Wikipedia, The Free
Encyclopedia, retrieved 2026-05-11. Authors: see the article's
[edit history](https://en.wikipedia.org/w/index.php?title=Natural_language_processing&action=history).

Any redistribution of this file or derivative works must preserve this
attribution and license.

## `shakespeare_input.txt` and `shakespeare_sonnets.txt`

Public domain. The complete works of William Shakespeare have been in the
public domain for centuries.

## `cities/` dataset

The cities-of-origin classification dataset is released by the CIS 5300
course staff under [CC BY 4.0](https://creativecommons.org/licenses/by/4.0/).