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Texas' grid operator warns rolling blackouts are possible as winter storm escalates demand for electricity {{URL}} via {@Texas Tribune@} This is how it started , but did n't end up working the way it was explained : 15-45 minute blackouts rolling through the state . Yeah
 Texas', rolling blackouts, winter storm, Texas Tribune
Please list all entity words in the text that fit the category. Output format is "word1, word2". 
Option: group, creative work, person, event, product, location, corporation 
Text: {0} 
Answer:
 Texas', rolling blackouts, winter storm, Texas Tribune