81964
A series of problems meant that production versions did not begin to arrive until December 1977 , by which time the TRS-80 and Apple II had already begun deliveries .
 instrument: TRS-80; instrument: Apple II
Given options, please tell me the categories of all the listed entity words.Output format is "type1: word1; type2: word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
 Entities: TRS-80, Apple II 
Answer:
 instrument: TRS-80; instrument: Apple II