10878
Cancelation of the PDP-X prompted de Castro to consider leaving DEC to build a system on his own .
 person: de Castro; organization: DEC
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:
 person: de Castro; organization: DEC