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A few moments ago , out on the horizon , not very far ahead of the U . S . Army ' s 3rd Squadron , 7th Cavalry , we heard more than a few explosions .
 organization: the U . S . Army; organization: 7th Cavalry; person: the U . S . Army ' s 3rd Squadron , 7th Cavalry; person: we; location: the horizon
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 organization: the U . S . Army; organization: 7th Cavalry; person: the U . S . Army ' s 3rd Squadron , 7th Cavalry; person: we; location: the horizon