3322
The 3/1st was raised in 1915 , remaining in the East Riding until 1917 when it was absorbed by the 1st Cavalry Reserve Regiment at the Curragh , in Ireland .
 organization: Riding
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: Riding