Teacher:Classify the given a piece of financial news into three classes: positive, negative, and neutral. Output must be 'positive', 'negative', or 'neutral'.
Teacher: Now, understand the problem? Solve this instance: Separately , YIT Corporation and Austrian firm E AG last week signed an agreement on the sale of E 's building system service business in Germany , Austria , Poland , the Czech Republic , Hungary and Romania for EUR 55 mln .
Student:
positive