given this text: "An African Adventure with NAME_1 is a short film on the Gatti-Hallicrafters Expedition to British East Africa in 1947 that is presented by International Harvester of Chicago. The film opens with a shot of members of the expedition on deck of a ship as it sails to South Africa. A man holds a cobra at the Port Elizabeth Snake Gardens to extract its venom. " what is the date in the text? Your response should contain less than 150 words.
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