108649
The Mansfield Railway Company was legally independent , but the GCR rubbed their hands as the traffic would fall to them at both ends , with coals for export through Immingham being the biggest single element .
 GCR
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 GCR