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Putin proposed limiting the Russian and American nuclear capabilities by reducing the number of nuclear heads to under 1500 each , a smaller number than that in the Russian - American Start - 3 treaty currently being negotiated .
 geographical social political: Russian; geographical social political: American; geographical social political: each; geographical social political: Russian; geographical social political: American; person: Putin; weapon: nuclear; weapon: nuclear; weapon: nuclear heads; weapon: 1500
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: geographical social political, organization, person, location, facility, vehicle, weapon 
Text: {0} 
Answer:
 geographical social political: Russian; geographical social political: American; geographical social political: each; geographical social political: Russian; geographical social political: American; person: Putin; weapon: nuclear; weapon: nuclear; weapon: nuclear heads; weapon: 1500