Generate a topic word for the given sentence. A topic word is usually the name of a person, place, animal, concept or object the sentence is focusing on.

Q: spintronics is a kind of electronics that uses the tiny magnetic fields that come from electrons as well as their electric charge.

A: spintronics
****
Q: metis is the goddess of wisdom in greek mythology.

A: metis
****
Q: robert dyas is a large united kingdom company.

A:
robert dyas
****