9643
From the 1960 s through the 1980 s , " by far the most significant developments in the design and construction of acoustic guitars " were made by the Ovation Guitar Company .
 organization: Ovation Guitar Company
Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 organization: Ovation Guitar Company