Task: Question Generation
Input (English): Context : The Mortaio da 210/8 D.S. was a siege howitzer which served with Italy during World War I and World War II. It was an old-fashioned weapon when introduced around 1900. 
Subject : Mortaio da 210/8 D.S. 
Relation : conflict
Output (English): In what war was Mortaio da 210/8 D.S. in?