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: Vaisala 's net profit for the third quarter of 2007 dropped to 3.0 mln euro ( $ 4.3 mln ) from 6.8 mln euro ( $ 9.8 mln ) for the same period of 2006 .
Student:
negative