sentence: The red coral reef off the coast of Australia , for instance , serves as a shelter for algae and other tiny sea fishes and an index of environmental fragility .
modified: The red coral reef off coast in Austrialia , for instance , serve as shelter for algea and other sea tiny fishes and index of enviroment fragility .
transformation: DET, PREP, SPELL, VERB:SVA, DET, SPELL, WO, DET, SPELL