I want to know the answer to the following question:
Which British Prime Minister recognized the Dominions' contributions in 1917?
All the background I'm provided with is that "The important contribution of the Dominions to the war effort was recognised in 1917 by the British Prime Minister David Lloyd George when he invited each of the Dominion Prime Ministers to join an Imperial War Cabinet to co-ordinate imperial policy.". Is that enough to answer the question?
Answer: yes