188799
The 2nd Platoon is depicted defending the Observation Post ( OP ) named after a platoon medic who was killed earlier in the campaign , PFC Juan Sebastián Restrepo , a Colombia n-born naturalized U.S. citizen .
 Colombia
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Colombia