Classify the given a piece of financial news into three classes: positive, negative, and neutral. Output must be 'positive', 'negative', or 'neutral'.

Example Input: Kone shares dropped 4.1 percent to x20ac 43 US$ 55.77 in Helsinki .
Example Output: negative

Example Input: Finnish construction company YIT Oyj said on November 13 , 2007 it won a 70 mln euro $ 102.8 mln contract to construct the new office building for local property company Tapiola Real Estate Oy .
Example Output: positive

Example Input: Operating profit margin increased from 11.2 % to 11.7 % .
Example Output:
positive