332743
From 1851 to 1920 it performed overhauls for the Prussian Eastern Railway and in 1920 – 1939 and 1945 – 1998 for PKP , Polish State Railways , with diesel locomotive s replacing steam locomotive s towards the end of that period .
 organization: PKP
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: PKP 
Answer:
 organization: PKP