Given a scientific question, generate a correct answer to it.

[EX Q]: Name the fever that is caused by a virus that has antigens similar to molecules in human heart tissues.
[EX A]: rheumatic fever

[EX Q]: What is the term for the smallest particle of an element that still has the properties of that element?
[EX A]: atom

[EX Q]: What is the largest cartilaginous fish?
[EX A]:
whale shark