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Triggered by the erratic words of regime spokesman Günter Schabowski in a TV press conference , stating that the planned changes were in effect " immediately , without delay , " hundreds of thousands of people took advantage of the opportunity .
 Günter Schabowski
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: media, plant, vehicle, astronomical object, time, disease, animal, location, person, organization, mythical figure, food, biology, geographical phenomenon, instrument, event 
Text: {0} 
Answer:
 Günter Schabowski