The heart of the sentence - the action. All the following terms preceded by an asterisk (*) will further detail the verb context.
In the Afrikaans sentence, the verb is second after the subject. The subject is the person or thing doing the action. So, if "John tracks the spy." or "The camera tracks the spy." then John or the camera are the subjects and 'tracks' is the verb. BTW, 'the spy' is called the object, the thing receiving the action.