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Philippine President Benigno Aquino III and Swiss President Eveline Widmer-Schlumpf discussed abouth the trade relations between the Philippines and Switzerland during the bilateral talks held at the 9th Asia-Europe Meeting in Vientiane in Laos .
 Benigno Aquino III, Eveline Widmer-Schlumpf, Vientiane, Laos
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Benigno Aquino III, Eveline Widmer-Schlumpf, Vientiane, Laos