323994
Litigation Impax and DAVA Pharmaceuticals engaged in a legal dispute with Purdue Pharma over the patent s and production of time-released oxycodone ( OxyContin ) until reaching an agreement in April 2007 .
 organization: Pharmaceuticals; organization: Purdue Pharma
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: Pharmaceuticals, Purdue Pharma 
Answer:
 organization: Pharmaceuticals; organization: Purdue Pharma