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: It is associated chiefly with the holiday Halloween, and was named after the phenomenon of strange light flickering over peat bogs, called ignis fatuus or jack-o '-lantern.

It is usually related to Halloween, and named after the event of strang lights flickering over peat bogs. They are called jack-o-lanterns.