121515
Part of the reason for five-year delay with the second segment was delays with the installation of the signaling system which was being carried out by Adtranz .
 Adtranz
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Adtranz