Task: Text Categorization
Input (English): During this period, Gondwanaland was in existence and climate was extreme. Regions 65 degrees or more from the equator were covered with glacial ice. Also, the earliest remains of terrestrial plants come from this time. FTP, identify this period which was named for a tribe in Great Britain and Wales and which occurred from 438 to 408 million years ago.
Output (English): Science