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reporter : tom , the greening of al gore today - - his environmental message hasn ' t always been a priority on the campaign trail , but now , with fears of ralph nader ' s growing support , it could be critical .
 person: tom; person: al gore; person: his; person: ralph nader
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
 Entities: tom, al gore, his, ralph nader 
Answer:
 person: tom; person: al gore; person: his; person: ralph nader