TASK DEFINITION: You are given a question. You need to detect which category better describes the question. A question belongs to the description category if it asks about description and abstract concepts. Entity questions are about entities such as animals, colors, sports, etc. Abbreviation questions ask about abbreviations and expressions abbreviated. Questions regarding human beings, description of a person, and a group or organization of persons are categorized as Human. Quantity questions are asking about numeric values and Location questions ask about locations, cities, and countries. Answer with "Description", "Entity", "Abbreviation", "Person", "Quantity", and "Location".
PROBLEM: How many people on the ground were killed from the bombing of Pan Am Flight 103 over Lockerbie , Scotland , December 21 , CD .

SOLUTION: Quantity

PROBLEM: What river does the Grand Coulee Dam dam ?

SOLUTION: Location

PROBLEM: How does crosstalk relate to InSb thickness in infrared detectors ?

SOLUTION:
Description