Task: Paraphrasing
Input (English): Question: When exposed to ultraviolet, some substances, such as minerals, glow in characteristic visible wavelengths, a process called this? 
Answer: fluorescence. 
Sentence: When exposed to ultraviolet, some substances, such as minerals, glow in characteristic visible wavelengths, in a process called fluorescence.
Output (English): Exposing ultraviolet light to minerals will cause them to glow in characteristic visible wavelengths, which is known as fluorescence.