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:
The design of experiments (DOE, DOX, or experimental design) is the design of any task that aims to describe or explain the variation of information under conditions that are hypothesized to reflect the variation. The term is generally associated with true experiments in which the design introduces conditions that directly affect the variation, but may also refer to the design of quasi-experiments, in which natural conditions that influence the variation are selected for observation.
answer:
the objective of design of experiments (doe) is to


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:
The theme is the city of Paris, France; it includes a half scale, 540-foot (164.6 m) tall replica of the Eiffel Tower, a sign in the shape of the Montgolfier balloon, a two-thirds size Arc de Triomphe, a replica of La Fontaine des Mers, and a 1,200-seat theatre called Le Théâtre des Arts. The front of the hotel suggests the Paris Opera House and the Louvre.
answer:

which hotel in vegas has the eiffel tower