53052
The club is one of the five teams that has earned the right to keep the European Cup and to wear a multiple-winner badge ; they won consecutively in 1971 – 1973 .
 European Cup
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:
 European Cup