Generate a correct and concise answer for the question based on the words in the context.
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Question: Context : ISO 3166-2:VU is the entry for Vanuatu in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1. 
Question : Who set the standards for ISO 3166-2:VU?

Answer: International Organization for Standardization


Question: Context : Sigmund Selberg (11 August 1910 -- 20 April 1994) was a Norwegian mathematician. 
Question : What was Sigmund Selberg's occupation?

Answer: mathematician


Question: Context : ``The Vengeance Factor'' is the ninth episode of the third season of the science fiction television series Star Trek: The Next Generation, and the 57th episode of the series overall. 
Question : What series is The Vengeance Factor a part of?

Answer:
Star Trek: The Next Generation