4007
and now experts say they ' re going to keep doing that , even when the economy picks up , e - mail , video , web conferencing becoming popular alternatives to face - to - face meetings .
 they, experts
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: organization, person, geographical social political, vehicle, location, weapon, facility 
Text: {0} 
Answer:
 they, experts