31448
It was initially built as narrow gauge ; the successor South Haven and Eastern Railroad standard gauge d the line ( along with an extension from Hartford to South Haven ) in April and May 1899 .
 location: Haven; organization: Railroad; location: Hartford; location: South Haven
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: Haven, Railroad, Hartford, South Haven 
Answer:
 location: Haven; organization: Railroad; location: Hartford; location: South Haven