76089
he was an invited speaker of the ICM in 1983 in Warsaw and in 1998 in Berlin , as well as a plenary speaker of the ICM in 2018 in Rio de Janeiro .
 Warsaw, Berlin, Rio de Janeiro
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:
 Warsaw, Berlin, Rio de Janeiro