从可用查询的下拉式清单，为选取的资料来源资料表选取查询。

Select a query from the drop-down list of available queries for the selected data source table.

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但原始资料可能来自资料表以外的来源。

But the original data can come from sources other than tables.

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资料来源：表中“国内旅游人数”的相关资料来自北京市旅游局。

Sources:Data related to"Number of Domestic Tourists"in the table were provided by Beijing Municipal Bureau of Tourism.

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