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: ( Filippova ) A trilateral agreement on investment in the construction of a technology park in St Petersburg was to have been signed in the course of the forum , Days of the Russian Economy , that opened in Helsinki today .
Student:
positive