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File photo taken on April 24, 2019 shows temporary tarpaulins protecting the Notre Dame Cathedral from rain damage in Paris, capital of France. The cathedral in central Paris caught fire on April 15 last year. (Xinhua/Gao Jing)

File photo taken on April 24, 2019 shows temporary tarpaulins protecting the Notre Dame Cathedral from rain damage in Paris, capital of France. The cathedral in central Paris caught fire on April 15 last year. (Xinhua/Gao Jing)