“Data and Web Science” Lecture Series Department of Informatics, Aristotle University of Thessaloniki, Greece (http://dws.csd.auth.gr) MONDAY March 21st, 2022, 7:00pm at : https://authgr.zoom.us/j/97159727135?pwd=VzQ0bGYzNlcwUVQzZFlwa1pkV2dwZz09 Title:  Who