In this task, you are given a sentence and question which can be answered using the sentence. Your task is to answer the question using the information from the sentence. The answer to the question is unique and it is a continuous text span from the sentence.

[Q]: Sentence: In a traditional ceremony , Command Sgt. Major Richard L. Ross , holding the division color with battle streamers , passed it to General Frederick M. Franks , Jr. , completing the official retirement of the division , and the 3rd Armored Division was removed from the official force structure of the U.S. Army . 
 Question: what was  completed?
[A]: the official retirement of the division


[Q]: Sentence: Then , built by the LNWR , the branch line to Ashbourne was opened in 1899 . 
 Question: when was something opened?
[A]: in 1899


[Q]: Sentence: The distinction between Primary and Secondary groups serves to identify between two orders of social organisation through analysis of the group relationships and their nature . 
 Question: what does something serve  to do?
[A]:
identify between two orders of social organisation through analysis of the group relationships and their nature