4878
The cash-free challenge . . . are contactless cards a safe way to pay ? @ JasGardner investigates : http://t.co/H5cq7akvca
 JasGardner
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: location, person, organization 
Text: {0} 
Answer:
 JasGardner