321490
The formation , as a major oil-producing geological formation , has had its strata extensively investigated and mapped for petroleum exploration and is of major importance to understanding the complex geological history of the state of California .
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Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities:  
Answer:
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