31672
The microscopic shells of radiolarians are found in cherts of this age in the Culm of Devon and Cornwall , and in Russia , Germany and elsewhere .
 Culm, Devon, Cornwall, Russia, Germany
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Culm, Devon, Cornwall, Russia, Germany