Task: Text Simplification
Input (English): historically , the sensations of itch and pain have not been considered to be independent of each other until recently , where it was found that itch has several features in common with pain , but exhibits notable differences.
Output (English): in the past , until recently , feelings of itch and pain were not thought to exist seperately until it was found that itch , which has some features that are like those found with pain , shows some important differences.