2538
In Germany , most contemporary telephones have a specific button functioning as call return , which is an internal function of the telephone itself ( the number of the last caller is stored inside the phone at the time of that last call ) and thus does n't have a numeric code .
 location: Germany
Please list all entity words in the text that fit the category.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} 
Answer:
 location: Germany