1925
From 1851 – 1861 he was chairman of the Mersey Docks and Harbour Board .
 organization: Mersey Docks and Harbour Board
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: Mersey Docks and Harbour Board