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: In February 1942, he was hospitalized, later claiming that this was due to a nervous breakdown connected with the ethnic cleansing in Belarus, especially the genocide of the Jews.

He was taken into the hospital. He explained that this was because of fears involving the killing of an ethnicity.