Task: Instance Description Understanding (ontology: Earth_Environment/SWEET)

Which of the following definitions best describes the instance 'astronomical'?

A. the instance climate classfication receives year-round precipitation, its warmest month is below 22 degree C and has 4 months above 10 degree C.
B. Coordinate System with its origin on the axis of the Earth and fixed with respect to the stars.
C. the instance climate classification, also known as the hot low-latitude steppe, is characterized by having mean annual temperatures greater than 18 degree C.
D. the instance climate classification is characterized by winter drought and warmest month temperatures below 22 degree C.

Answer: Coordinate System with its origin on the axis of the Earth and fixed with respect to the stars.