42799
This took place between about 478,000 to 424,000 years ago , and was responsible for the diversion of the River Thames onto its present course .
 location: River Thames
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: River Thames 
Answer:
 location: River Thames