Definition: Rewrite each original sentence in order to make it easier to understand by non-native speakers of English. You can do so by replacing complex words with simpler synonyms (i.e. paraphrasing), deleting unimportant information (i.e. compression), and/or splitting a long complex sentence into several simpler ones. The final simplified sentences need to be grammatical, fluent, and retain the main ideas of their original counterparts without altering their meanings.
Input: He returns in the 2007 series of Doctor Who, reuniting with the tenth incarnation of the Doctor, and returned again for the 2008 series.

He returns in the 2007 series of Doctor Who, reuniting with the tenth version of the Doctor.  He comes back again for the 2008 series.