In this task, we ask you to elaborate the sentence without changing its general meaning. You can do so by explaining further the input sentence, using more precise wording, adding qualifiers and auxiliary information etc.
Q: Many of the other books they say are written by Ezra ( First Esdras , 3-6 Ezra ) are written after that .
A: 
The canonical Book of Ezra and Book of Nehemiah are the oldest sources for the activity of Ezra , whereas many of the other books ascribed to Ezra ( First Esdras , 3 – 6 Ezra ) are later literary works dependent on the canonical books of Ezra and Nehemiah .