97645
In December 1899 , more than 40 schoolchildren skating on the frozen river at Frelinghien fell through the ice and drowned .
 Frelinghien
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:
 Frelinghien