42776
In the early Cambrian period , the volcanoes and mountains of England and Wales were eroded as the land became flooded by a rise in sea level , and new layers of sediment were laid down .
 Cambrian, England, Wales
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Cambrian, England, Wales