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.

a private prison is a prison run by a private company instead of the government.
private prison

georges loinger (29 august 1910 – 28 december 2018) was a french resistance fighter during world war ii.
georges loinger

mammary glands are the part of the female body designed for the making milk for baby mammals to drink.

mammary gland