Question: When did the byzantine empire start to decline?
qaPairs: question: When did the byzantine empire start to decline slightly after major losses during Arab conquests?
answer: 7th century
question: When did the byzantine empire start to decline for a final time?
answer: 1071
11th century
qaPairs: question: When did the byzantine empire first start to decline?
answer: 7th century
question: When did the byzantine empire final start to decline?
answer: 11th century