"Twitter"@en . "Sentiment"@en . . "Wandh\u00F6fer" . . "Timo Wandh\u00F6fer" . "EGovernment"@en . "Controversy"@en . "Timo" . "Facebook"@en . . "Online Forums"@en . "3f4108e508ada9220178e847f7173c1d" . "Topic Opinion Analysis"@en .