instruction:
Generate a correct and concise answer for the question based on the words in the context.
question:
Context : The 18th Mounted Brigade previously known as the 2/1st Yorkshire Mounted Brigade was a 2nd Line yeomanry brigade of the British Army during the First World War. 
Question : To which branch did 18th Mounted Brigade belong?
answer:
British Army


question:
Context : The Roviana rail (Gallirallus rovianae) is a species of bird in the family Rallidae. 
Question : Is the taxon rank of Roviana rail species or genus?
answer:
species


question:
Context : Peng Pai went to Japan in 1917 and studied politico-economics after admitted into the Waseda University, Tokyo. 
Question : Where did Peng Pai study or work?
answer:

Waseda University