83477
He started swimming at age 13 and was spotted by the then Delta State Swim Coach Monday Aigbe , after winning a swimming competition in the river .
 location: Delta
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: Delta 
Answer:
 location: Delta