13383
Photometric follow-up observations were taken on February 16 , 2008 using the James Gregory Telescope ( JGT ) in Scotland , which took 1047 exposures of the star , although the last twenty images taken were obscured by cloud cover and were discarded .
 None
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:  
Answer:
 None