Detailed Instructions: In this task, you will be shown an incorrect English sentence. You need to generate a corrected form of the input sentence.
Q: Many studies over the last 5 0 years have shown that people who have fluoride in their drinking water are considerably have less cavities than people who have not drinking nonfluoridated water . 
A:
Many studies over the last 5 0 years have shown that people who have fluoride in their drinking water are considerably less likely to have cavities than people who have non-fluoridated water . 