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.

the alkaline earth metals are the second group of metals on the periodic table.
alkaline earth metal

vehari district is a district in the punjab province of pakistan.
vehari district

movies based on her life include: "chanel solitaire" (1981), "coco chanel" (2008), "coco before coco" (2009), and "coco chanel & igor stravinsky" (2009).

coco chanel