299477
L'Anguille River ( pronounced " lan-GWEEL " or locally " LANG-gill " ) is a tributary of the St. Francis River , approximately 110 mi ( 175 km ) long , in northeastern Arkansas in the United States .
 St. Francis, Arkansas, United States
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 St. Francis, Arkansas, United States