1587
The Battle of Sena Gallica , was a naval battle fought off the Italian Adriatic coast in the autumn of 551 between an East Roman ( Byzantine ) and an Ostrogoth fleet , during the Gothic War ( 535 – 554 ) .
 East Roman ( Byzantine )
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 East Roman ( Byzantine )