55162
In 1994 , by which time the SDP and the Liberal Party had merged , he became President of the Liberal Democrats , a position he held for four years .
 organization: SDP; organization: Liberal; organization: Liberal Democrats
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: SDP, Liberal, Liberal Democrats 
Answer:
 organization: SDP; organization: Liberal; organization: Liberal Democrats