239233
operated as a national non profit organization registered in Maryland with a volunteer Board of Directors that conducted informal science education programs from 1984-2007 .
 location: Maryland
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: Maryland 
Answer:
 location: Maryland