392289
For precise maneuvering around the caverns , pilot tunnels and shelters the aircraft tractors are equipped with a special floor lighting headlights - with the light cone of this headlamp the driver must follow the respective ground marking the appropriate aircraft type to be quickly and safely drive in tight spaces .
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Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
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