Task: Text Simplification
Input (English): 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.
Output (English): it is mostly known for the holiday halloween , and was named after the event of strange light flickering over peat bogs , called ignis fatuus or " jack-o ' -lantern ".