Output a stream of consciousness before answering the following. Island of the Blue Dolphins is a 1960 children's novel written by Scott O'Dell and tells the story of a 12-year-old girl stranded alone for years on an island off the California coast. It is based on the true story of a Nicoleño Native American left alone for 18 years on San Nicolas Island during the 19th century.\n\nHow long did karana live on the island alone?
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To answer the question, consider the following: It is based on the true story of a Nicoleño Native American left alone for 18 years on San Nicolas Island during the 19th century.
The answer: 18 years.
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