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However, we won't stop there. Let's assume that we also have other meters around the city
and we can detect fires and loud noises—thanks to the power of social media, we might
even be measuring twitter messages to determine the general sense of alarm of a particular
area. If we translate all that information into a fire spreading through the same general
zone, at the same speed as our first complex event, we might consider the possibility (as
bizarre as it might seem at the beginning) that Godzilla is going through the city. This
Godzilla event would be a complex event as well, inferred from other complex events.
Once we detect our complex events, we will not want to stop at just the detection. 99 per-
cent of the time, we will want to take a reactive action towards those events. For that par-
ticular case, we fall into the realm of CEP.
