In [1] and<cite> [5]</cite> we thoroughly presented a methodology (and applied it in two different case studies) which aims towards the creation of summaries from descriptions of evolving events which are emitted from multiple sources. The end result of this methodology is the computational extraction of a structure, which we called a grid. Nevertheless, it can be the case that the created grid can prove to be large enough in order for the final summary to exceed the required compression rate.