856
1084 Due to  Constantine  IV's victories the situation in the Eastern provinces of the Empire was stable when Justinian ascended the throne.Moore  Justinian II  After a preliminary strike against the Arabs in Armenia Norwich pg .
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Given a phrase that describes the relationship between two words, extract the words and the lexical relationship between them. The output format should be "relation1: word1, word2; relation2: word3, word4". 
Option: cities of residence, top members employees, members, alternate names, origin, state or provinces of residence, title of person, spouse, city of headquarters, NA, founded by, state or province of headquarters, employee of, countries of residence, country of birth, founded, subsidiaries, country of headquarters 
Text: {0} 
Answer:
 NA: Constantine, Justinian II