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The data scientist can do all of this, provided that the event data gets to him in a way that he can handle it. To achieve this, we need to provide [TAB]syntax for the event data, we have to assign [TAB]proper semantics to the data, and we have to cater for [TAB] possible extensions in the future, that is, we have to be able to add new data to the event log or event stream with ease.