Task: Question Generation
Input (English): Context : Andrew Edward McKeever DSO, MC & Bar, DFC (21 August 1894 -- 25 December 1919) was a Canadian World War I two-seater flying ace who, in conjunction with his gunners, was credited with 31 victories. 
Subject : Andrew Edward McKeever 
Relation : conflict
Output (English): Which historic war did Andrew Edward McKeever participate?