Detailed Instructions: 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: the may, 2 2010 pichilemu earthquake was a magnitude 6.0 m earthquake that struck off pichilemu, chile, at 10:52 am on may 2, 2010 at the epicenter, at a depth of 31 km.
A:
2010 pichilemu earthquake