Given the task definition and input, reply with output. Indicate a text span in the passage about which an inquisitive question is asked. (note, don't answer the question).

Sentence: Canada , which is preparing to speed up tariff cuts with the U . S . , recorded a 47 % narrowing in its trade surplus with the U . S . in August , Statistics Canada , a federal agency , reported .<sep>Question: Why is Canada narrowing the trade surplus with U.S.?

narrowing