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

Input: Consider Input: Componenta increased its stake in Turkish steel company Doktas Dokumculuk Ticaret ve Sanayi A.S. to 92.6 pct stake in March 2007 .

Output: positive

Input: Consider Input: In addition to fireplace exports , demand for lining stone has exceeded the level of the earlier part of the year and will continue to be clearly brisker for the remainder of the year .

Output: positive

Input: Consider Input: Ruukki 's delivery volumes and selling prices showed favourable development and the company 's comparable net sales grew by 50 % year-on-year to EUR647m , CEO Sakari Tamminen said .
Output: positive