Input: Article: The age of the Earth is about 4.54 billion years old. The earliest undisputed evidence of life on Earth dates at least from 3.5 billion years ago, during the Eoarchean Era after a geological crust started to solidify following the earlier molten Hadean Eon. There are microbial mat fossils found in 3.48 billion-year-old sandstone discovered in Western Australia. Other early physical evidence of a biogenic substance is graphite in 3.7 billion-year-old metasedimentary rocks discovered in Western Greenland. More recently, in 2015, "remains of biotic life" were found in 4.1 billion-year-old rocks in Western Australia. According to one of the researchers, "If life arose relatively quickly on Earth ... then it could be common in the universe."

Now answer this question: What era contains the earliest undisputed evidence of life on Earth?

Output: the Eoarchean Era

Input: Article: The cup triumph was also Everton's passport to the Cup Winners' Cup—their first European campaign in the post-Heysel era. Progress under Joe Royle continued in 1995–96 as they climbed to sixth place in the Premiership. A fifteenth-place finish the following season saw Royle resign towards the end of the campaign, to be temporarily replaced by club captain, Dave Watson. Howard Kendall was appointed Everton manager for the third time in 1997, but the appointment proved unsuccessful as Everton finished seventeenth in the Premiership; only avoiding relegation due to their superior goal difference over Bolton Wanderers. Former Rangers manager Walter Smith then took over from Kendall in the summer of 1998 but only managed three successive finishes in the bottom half of the table.

Now answer this question: How many successive finishes did Walter Smith manage for the Everton FC?

Output: three

Input: Article: In 1729, Nader Shah, a chieftain and military genius from Khorasan, successfully drove out and conquered the Pashtun invaders. He subsequently took back the annexed Caucasian territories which were divided among the Ottoman and Russian authorities by the ongoing chaos in Iran. During the reign of Nader Shah, Iran reached its greatest extent since the Sassanid Empire, reestablishing the Iranian hegemony all over the Caucasus, as well as other major parts of the west and central Asia, and briefly possessing what was arguably the most powerful empire at the time.

Now answer this question: Nader Shah took back what territories that were annexed by the Ottomans and the Russians?

Output:
Caucasian territories