71851
The images , many once painted , were carved as outside rock reliefs and inside artificial caves excavated from the limestone cliffs of the Xiangshan ( ) and Longmenshan , running east and west. The Yi River ( ) flows northward between them and the area used to be called " Yique " ( ) .
 Xiangshan, Longmenshan, Yi River, Yique
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Xiangshan, Longmenshan, Yi River, Yique