2658
He became Commanding Officer of 17th/21st Lancers in 1979 and Commander of 7th Armoured Brigade in 1983 .
 organization: 17th/21st Lancers; organization: 7th Armoured Brigade
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: 17th/21st Lancers; organization: 7th Armoured Brigade