4850
They produced 4,200 " hp from a pair of Thornycroft water-tube boilers , giving them a top speed of 27 knots , giving the range and speed to travel effectively with a battle fleet .
 organization: Thornycroft
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Thornycroft 
Answer:
 organization: Thornycroft