90363
In studies from northern and southern Spain , the leading prey numerically were both reptilian , although in Biscay ( northern Spain ) the leading prey ( 19 % ) was classified as " unidentified snakes " .
 Spain, Biscay, Spain
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Spain, Biscay, Spain