10. The computer system according to claim 1 , further comprising an attribute calculator for calculating a value of the activation attribute.
10. The computer system according to claim 1 , further comprising an attribute calculator for calculating a value of the activation attribute. 16. The computer system according to claim 10 , wherein the calculator is arranged to calculate the activation attribute value of the at least one context entity on the basis of the kind of relationship between entities related to the at least one context entity.