305031
Present Currently , on a Monday - Saturday daytime , National Express West Midlands operates the 311 and 313 ( Walsall - Dudley services ) to a combined 7/8-minute Monday - Saturday daytime frequency .
 location: Midlands; location: Walsall; location: Dudley
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: Midlands, Walsall, Dudley 
Answer:
 location: Midlands; location: Walsall; location: Dudley