Teacher:Given a piece of financial news and its polarity, classify it into 'true' if the polarity is correct and classify into 'false' if the polarity is incorrect. Output must be 'true' or 'false'.
Teacher: Now, understand the problem? Solve this instance: news:The airline estimated that the cancellation of its flights due to the closure of European airspace , and the process of recommencing traffic , have caused a the company a loss of EUR20m , including the costs of stranded passengers ' accommodation .
polarity:negative
Student:
true