Generate a question which can yield the answer mentioned in the input. Generated question must be answered by the answer provided in input, without using any extra knowledge.

Context : Káťa Kabanová (also known in various spellings including Katia, Katja, Katya, and Kabanowa) is an opera in three acts, with music by Leoš Janáček to a libretto by Vincenc Červinka, based on The Storm, a play by Alexander Ostrovsky. 
Answer : The Storm
The Káťa Kabanová is based upon what?

Context : ISO 3166-2:CU is the entry for Cuba in ISO 3166-2, part of the ISO 3166 standard published by the International Organization for Standardization (ISO), which defines codes for the names of the principal subdivisions (e.g., provinces or states) of all countries coded in ISO 3166-1. 
Answer : International Organization for Standardization
Who set the standards for ISO 3166-2:CU?

Context : Lieutenant General Sir Harry Edward de Robillard Wetherall KBE CB DSO MC (1889--1979) was an officer in the British Army during World War I and World War II. 
Answer : British Army

What military branch did Harry Edward de Robillard Wetherall belong to?