Generate a correct and concise answer for the question based on the words in the context.

Example input: Context : Isaac Nicola Romero (1916 in Havana, Cuba -- 1997) was a prominent Cuban guitarist and one of the founders of the modern Cuban Guitar School. 
Question : What was Isaac Nicola's city of birth?
Example output: Havana
Example explanation: According to context Issac Nicola's city of birth is Havana. Hence this is a correct output.
Q: Context : Mario de Bernardi (1893--1959) was an Italian World War I fighter pilot, seaplane air racer of the 1920s, and test pilot of early Italian experimental jets. 
Question : During which historic war was Mario de Bernardi an officer?
A:
World War I