2497
The engine was later named after the River Medway in line with Rolls-Royce company tradition for jet engines .
 organization: Rolls-Royce
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Rolls-Royce