61558
In 1865 , France , Belgium , Italy , and Switzerland formed the Latin Monetary Union , in which they agreed to value their national currencies to a standard of 4.5 grams of silver or 0.290322 " grams of gold .
 France, Belgium, Italy, Switzerland, Latin Monetary Union
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 France, Belgium, Italy, Switzerland, Latin Monetary Union