5509
The high speeds achieved in that race caused a rule change , which already came in effect in 1968 : the prototypes were limited to the capacity of 3.0 liters , the same as in Formula One .
 event: Formula One
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 event: Formula One