Answer the following question, with explanation first.
Hershey's Special Dark is a component of the traditional Hershey's Miniatures assortment first sold in 1939, when the Special Dark was called Semi-Sweet.\n\nWhen did hershey's special dark come out?

1939
The relevant sentence in the passage is: Hershey's Special Dark is a component of the traditional Hershey's Miniatures assortment first sold in 1939, when the Special Dark was called Semi-Sweet.

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The answer is 1939