51010
In Arizona , the petrified woods of the famous Petrified Forest National Park belong to several species of " Araucarioxylon " , the most common of them being " Araucarioxylon arizonicum " .
 Arizona, Petrified Forest National Park, Araucarioxylon
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Arizona, Petrified Forest National Park, Araucarioxylon