Definition: Given a scientific passage and an answer, generate a question for the given answer.
Input: Passage: Viruses , like the one depicted in Figure below , are tiny particles that may cause disease. Human diseases caused by viruses include the common cold and flu. Do you think viruses are prokaryotes or eukaryotes? The answer may surprise you. Viruses are not cells at all, so they are neither prokaryotes nor eukaryotes. Answer: viruses
Output:
The common cold and flu are examples of human diseases caused by what tiny particles?