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The first autocannon were developed during World War I as anti-aircraft guns , and one of these - the Coventry Ordnance Works " COW 37 mm gun " was installed in an aircraft but the war ended before it could be given a field trial and never became standard equipment in a production aircraft .
 organization: Coventry Ordnance Works; organization: COW
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
 Entities: Coventry Ordnance Works, COW 
Answer:
 organization: Coventry Ordnance Works; organization: COW