instruction:
In this task you will be given an answer to a question. You need to generate a question. The answer given should be a correct answer for the generated question.
question:
A Christmas tree is a decorated tree, usually an evergreen conifer such as spruce, pine, or fir or an artificial tree of similar appearance, associated with the celebration of Christmas. The modern Christmas tree was developed in medieval Livonia (present-day Estonia and Latvia) and early modern Germany, where devout Christians brought decorated trees into their homes. It acquired popularity beyond the Lutheran areas of Germany and the Baltic countries during the second half of the 19th century, at first among the upper classes.
answer:
when did decorations on the christmas tree began


question:
Since the AFL reserves competition merged with the Victorian Football League in 2000, Port Melbourne has been involved in two affiliations: with the Sydney Swans (2001 -- 2002), and with the North Melbourne Kangaroos (2003 -- 2005); since 2006, Port Melbourne has existed as a stand-alone VFL club.
answer:
who is port melbourne affiliated with in the afl


question:
The National League of Families POW / MIA flag, also known as the POW / MIA flag, consists of a silhouette of a prisoner of war (POW) before a guard tower and barbed wire in white on a black field. 'POW / MIA' appears above the silhouette and the words 'You Are Not Forgotten' appear below in white on the black field.
answer:

what does the message at the bottom of the pow mia flag mean