It is possible to notice that a restatement of the inference in the topic phrase was added to the answer.
In the answer shown above, we can see that the topic sentence is the first sentence, where it is stated that the British believed the telegram would encourage the US to enter the war. This topic sentence has as its inference the certainty that the British had a plan to enlist the help of the US and this inference is reaffirmed at the end of the paragraph, in the sentence "[...] logical inference is that he wanted to be sure that it would be effective when he did."
Learn more about what inferences are:
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