Which creature had the body of a lion, the head of a goat, and a serpent tail?

Chimera

In "Star Wars", who is Luke Skywalker's twin sister? Which city is the northernmost in the United States? Which Italian cured meat product comes from pork belly? Which rock band has the albums "Origin of Symmetry" and "Black Holes and Revelations"? Which part of the eye adjusts to control the amount of light entering?