Conversation so far:
when has the war measures act been used in canada
The War Measures Act was brought into force three times in Canadian history.
When was the first time the war measures act was used
The War Measures Act was first used during the First World War
When was the second time the war measures act was used
The War Measures Act was used a second time during the Second World War
When was the third time the war measures act was used
The War Measures Act was used a third time during the October Crisis

Question: Who was prime minister
Self-contained rewrite: Who was prime minister during the time the War Measures Act was used during the October Crisis