Input: Article: Textual criticism is a branch of textual scholarship, philology, and literary criticism that is concerned with the identification of textual variants in either manuscripts or printed books. Ancient scribes made alterations when copying manuscripts by hand. Given a manuscript copy, several or many copies, but not the original document, the textual critic might seek to reconstruct the original text (the archetype or autograph) as closely as possible. The same processes can be used to attempt to reconstruct intermediate versions, or recensions, of a document's transcription history. The ultimate objective of the textual critic's work is the production of a "critical edition" containing a scholarly curated text.

Now answer this question: Why are there differences in ancient copies of the same text?

Output: Ancient scribes made alterations when copying manuscripts by hand

Input: Article: In 1919 Nancy Astor was elected the first ever female member of parliament to take office in the British Houses of Parliament for the constituency of Plymouth Sutton. Taking over office from her husband Waldorf Astor, Lady Astor was a vibrantly active campaigner for her resident constituents . Plymouth was granted city status on 18 October 1928. The city's first Lord Mayor was appointed in 1935 and its boundaries further expanded in 1967 to include the town of Plympton and the parish of Plymstock.

Now answer this question: In what year did Plymouth receive its first Lord Mayor?

Output: 1935

Input: Article: Africa separated from Antarctica in the Jurassic, around 160 Ma, followed by the Indian subcontinent in the early Cretaceous (about 125 Ma). By the end of the Cretaceous, about 66 Ma, Antarctica (then connected to Australia) still had a subtropical climate and flora, complete with a marsupial fauna. In the Eocene epoch, about 40 Ma Australia-New Guinea separated from Antarctica, so that latitudinal currents could isolate Antarctica from Australia, and the first ice began to appear. During the Eocene–Oligocene extinction event about 34 million years ago, CO2 levels have been found to be about 760 ppm and had been decreasing from earlier levels in the thousands of ppm.

Now answer this question: When did Australia separate from Antarctica?

Output:
Eocene epoch