Input (grade 11): Eyre's horseshoe lake was actually composed of Lake Frome, Lake Callabonna, Lake Blanche, Lake Gregory, Lake Eyre South, and Lake Torrens itself.
Output (grade 10): Eyre's horseshoe lake was actually made up of six large salt lakes; Lake Frome, Lake Callabonna, Lake Blanche, Lake Gregory, Lake Eyre South, and Lake Torrens itself.