Generate a correct and concise answer for the question based on the words in the context.
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Question: Context : The Battle of Vescera (modern Biskra in Algeria) was fought in 682 or 683 between the Berbers of king Caecilius and their Byzantine allies from the Exarchate of Carthage against an Umayyad Arab army under Uqba ibn Nafi (the founder of Kairouan). 
Question : The point in time of Battle of Vescera was when?

Answer: 682


Question: Context : He was the father of Emmett Louis Till, whose murder in 1955 at the age of 14 galvanized the African-American civil rights movement. 
Question : Which crime led to the conviction of Louis Till?

Answer: murder


Question: Context : ISO 3166-2:AF is the entry for Afghanistan 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:AF?

Answer:
International Organization for Standardization