56090
The line includes the Tanggula Pass , which , at 5,072 m ( 16,640 " ft ) above sea level , is the world 's highest railway .
 Tanggula Pass
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 Tanggula Pass