Task: Text Simplification
Input (English): the two byzantine outbreaks during the 8th and 9th centuries were unusual in that the use of images was the main issue in the dispute , rather than a by-product of wider concerns.
Output (English): the use of images was the main issue in the dispute more than a by-product of wider concerns which was the unusual thing the two byzantine outbreaks of the 8th and the 9th centu.