Question: In what year was the author of the book series which had the character Opal Koboi born?

Related documents: [0]  [DOC] Eoin Colfer ( ; born 14 May 1965) is an Irish author of children's books. He worked as a primary school teacher before he became a full-time writer. He is best known for being the author of the "Artemis Fowl" series. In September 2008, Colfer was commissioned to write the sixth installment of the "Hitchhiker's Guide to the Galaxy" series, entitled "And Another Thing ...", which was published in October 2009. [END] 
[1]  [DOC] Opal Koboi is a fictional character from the Artemis Fowl series by Eoin Colfer. After the character's introduction in in the series as a supporting antagonist, Colfer again used Koboi as the main antagonist of the fourth, sixth, and eighth books in the series, giving her the status of archenemy to Artemis Fowl II. [END]  
Answer: 1965
1965